The difference is in the self-view, as I understand from the literature (and to a lesser extent, from my perceptions) has to do with the reasons behind the behavior. It seems to me that the autism comes from an area of innocence, that is, the person with that condition has no desire, and no need, to control or hurt anyone else; he just wants to do what he wants to do, and any hurt inflicted is irrelevant.  By contrast, it seems to me that BPs are coming from a place of hurt and defensiveness, and that hurt of their own may cause them to hurt others; they may not do it with full awareness of what they are doing (and may rationalize it), but they nonetheless do it intentionally.

As for which is preferable (if such a choice were possible and had to be made), while it may be true as someone said that BP is theoretically fixable, I think that person is in quite a bit of pain, and we all know -- from experience and from the literature -- that such "fixing" is rare.

As for the asperger/autism, it is probably never truly "fixable"  (if you read the literature the constantly made conclusion is that anyone who appears to get better was simply misdiagnosed) it can be ameliorated with PT, OT, speech therapy and some or any of the various autism programs out there.  Be relentless in pursuing your options, don't take a simple no for an answer -- a lot of times schools will try to avoid the costly provision of services, and need to be reminded of their obligations -- sometimes nagged a bit (or a lot).

As for the internal feelings of Autism/asperger's and BPs, it seems to me that while the "higher-functioning" people on the a/a spectrum may be uncomfortable sometimes with who they are, they are not coming from the same place of pain as the BPs.  If you want to read an encouraging book, read any of those by Temple Grandin, an asperger's woman who is a professor at Northern Colorado University, focusing on animal care.  Your son is fortunate to have a mother who is dedicated to helping him get better; that said, be very careful -- this is a realm filled with charlatans who prey on desperate parents.

And one more thing to keep in mind:  autism/asperger and BP also have in common that they are more a collection of behaviors than a specific condition -- it may be possible that the earlier diagnoses were correct and your son is not in the a/a spectrum.  In any event, in my experience, an autistic son raised with love will be an essentially happy person, with hope for the future, and will give back joy and love.  That's my view, anyway. 

Aspergers is one of five Autism Spectrum Disorders (ASD).  Autism is a group of developmental brain disorders, collectively called autism spectrum disorder (ASD). The term "spectrum" refers to the wide range of symptoms, skills, and levels of impairment, or disability, that children with ASD can have. Some children are mildly impaired by their symptoms, but others are severely disabled.  The five Autism Spectrum Disorders are Autistic disorder (classic autism), Asperger's disorder (Asperger syndrome),Pervasive developmental disorder not otherwise specified (PDD-NOS), Rett's disorder (Rett syndrome), and Childhood disintegrative disorder (CDD).

ASD are regarded by some experts as an inborn personality disorder sand most adults with ASD are probably clinically perceived as having a personality disorder.

In a small study (84 ASD patients), Rydén and Bejerot demostrated this.  Many of their Autism Spectrum Disorder patients displayed symptoms of other mental disorders.  They speculate that, in practice, psychiatrists diagnose/misdiagnose these patients as having a psychotic disorder, an obsessive compulsive disorder, a personality disorder or a pervasive developmental disorder and the treatment will vary as a result.

Comorbid with ASD------- Bipolar disorder Major depressive disorder Psychosis Social phobia ObsessiveCompulsive Panic disorder Gen Anxiety Disorder PTSD Bulimia Anorexia Borderline PD More info

------- 4% 49% 9% 17% 23% 9% 6% 2% 0% 13% 14%

When asking differential questions about multiple personality disorders, it is important to understand why you are asking the question and how you intend to use the information. Without this perspective and focus, the data may be overwhelming, confusing and misleading.  For example... .

~ if your child is not responding to therapy, it makes sense to look more carefully into the possibility that the wrong illness was diagnosed or whether there are comorbid (multiple) personality disorders at play. Bipolar and Major Depressive Disorder, for example, are far more responsive to pharmaceutical therapy than Borderline Personality or Aspergers Syndrome.

~ If you are trying to get along better with your wife, it's not as important to precisely analyze the comorbidity as it is to recognize and fully understand the problem behaviors and how to constructively deal with them.  

~ If you are recovering from a failed relationship, the important thing is often to understand which behaviors were pathologic/developmental (mental illness) and which were just the normal run of the mill problems common to failing/failed relationships - there is often a bias to assign too much to the "pathology" and not enough to common relationship problems, or the issues we created by our own behaviors.

It's important to know that the distinctions are not all that neat and tidy. In a 2008 study, comorbidity of BPD with another personality disorder was very high at 74% (77% for men, 72% for women).  In the study, the comorbidity of BPD with mood disorders was also very high at 75% as was anxiety disorders at 74%. This is one reason why there is controversy around the DSM classifications of Personality Disorders - there is so much overlap it is confusing even to professionals - personality disorders are real, but they are not easily or neatly defined.

More info

Some helpful hints for sorting through this.

• General and Specific There are definitions for "personality disorder" as a category and then there are definitions for the subcategories (i.e., borderline, narcissistic, antisocial, etc.).  Start with the broader definition first.  Keep in mind that to be a personality disorder, symptoms have been present for an extended period of time, are inflexible and pervasive, and are not a result of alcohol or drugs or another psychiatric disorder - - the history of symptoms can be traced back to adolescence or at least early adulthood - - the symptoms have caused and continue to cause significant distress or negative consequences in different aspects of the person's life. Symptoms are seen in at least two of the following areas: thoughts (ways of looking at the world, thinking about self or others, and interacting), emotions (appropriateness, intensity, and range of emotional functioning), interpersonal functioning (relationships and interpersonal skills), or impulse control

• Spectrum Disorders  An extremely important aspect of understanding mental disorders is understanding that there is a spectrum of severity. A spectrum is comprised of relatively "severe" mental disorders as well as relatively "mild and nonclinical deficits".  Some people with BPD traits cannot work, are hospitalized or incarcerated, and even kill themselves.  On the other hand, some fall below the threshold for clinical diagnosis and are simply very immature and self centered and difficult in intimate relationships.

• Comorbidity Borderline patients often present for evaluation or treatment with one or more comorbid axis I disorders (e.g.,depression, anxiety disorders, bipolar disorder, ADHD, autism spectrum disorders, anorexia nervosa, bulimia nervosa). It is not unusual for symptoms of these other disorders to mask the underlying borderline psychopathology, impeding accurate diagnosis and making treatment planning difficult. In some cases, it isn’t until treatment for other disorders fails that BPD is diagnosed.  Complicating this, additional axis I disorders may also develop over time.  Because of the frequency with which these clinically difficult situations occur, a substantial amount of research concerning the axis I comorbidity of borderline personality disorder has been conducted. A lot is based on small sample sizes so the numbers vary.  Be careful to look at the sample in any study -- comorbidity rates can differ significantly depending on whether the study population is treatment seeking individuals or random individuals in the community.  Also be aware that comorbidity rates  are generally lower in less severe cases of borderline personality disorder.

• Multi-axial Diagnosis  In the DSM-IV-TR system, technically, an individual should be diagnosed on all five different domains, or "axes." The clinician looks across a large number of afflictions and tries to find the best fit.  Using a single axis approach, which we often do as laymen, can be misleading -- looking at 1 or 2 metal illness and saying "that's it" -- if you look at 20 of these things, you may find yourself saying "thats it" a lot.     A note in the DSM-IV-TR states that appropriate use of the diagnostic criteria is said to require extensive clinical training, and its contents “cannot simply be applied in a cookbook fashion”.

• Don't become an Amateur Psychologist or Neurosurgeon  While awareness is a very good thing, if one suspects a mental disorder in the family it is best to see a mental health professional for an informed opinion and for some direction - even more so if you are emotionally distressed yourself and not at the top of your game. 

I hope this helps keep it in perspective.  

Skippy

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DIFFERENCES|COMORBIDITY: Overview of Comorbidity

Additional discussions... .

Personality Disorders

Borderline and Paranoid Personality Disorder

Borderline and Schzoid/Schizotypal Personality Disorder

Borderline and Antisocial Personality Disorder

Borderline and Histrionic Personality Disorder

Borderline and Narcissistic Personality Disorder

Borderline and Avoidant Personality Disorder

Borderline and Dependent Personality Disorder

Borderline and Obsessive Compulsive Personality Disorder

Borderline and Depressive Personality Disorder

Borderline and Passive Aggressive Personality Disorder

Borderline and Sadistic Personality Disorder

Borderline and Self Defeating Personality Disorder

Other

Borderline PD and Alcohol Dependence

Borderline PD and Aspergers

Borderline PD and Attention Deficit Hyperactivity Disorder

Borderline PD and BiPolar Disorder

Borderline PD and Dissociative Identity Disorder

Borderline PD and P.T.S.D.

Borderline PD and Reactive Attachment Disorder (RAD)

My 16 year old has Asperger's.  My husband of 22 months is BPD.  My son would NEVER speak to anyone the way my husband does.  My son is extremely logical when he argues (I never "win".  My husband typically makes no sense.  I'm afraid of what my husband may say because he hurts me with lies and accusations.  The only thing my son will ever hurt me with is the TRUTH! My son keeps me on my toes!

(By the way, Asperger's is a form of autism.  It is not a personality disorder.)

Living with both in such close proximity makes it clear that there is little similarity.

One thing I've wondered about is the gender difference.  Roughly 2/3 of borderlines are supposed to be female.  Roughly 2/3 of Aspies are supposed to be male.

The major difference, as I see it, is that AS people would love to learn how to connect better socially.  They are not happy living isolated lives. It's amazing how little they know socially compared with other kids. Like they take jokes literally.   I have worked with them and find them endearing usually. They do lack empathy. There are times that I have needed to step in and say something privately like "It looks like people are not interested in hearing about butterflies (dinosaurs, Walt disney cartoons, rock, whatever) anymore. Why dont you ask a question about Joey's new dog ?(or pool, or bike or whatever)". Reciprocal conversation is a skill that needs to be learned.  They honestly don't pick up on the social cues that people have lost interest in their topic of conversation.BUT THEY ARE AMENABLE TO CHANGE.    BPDs think that everyone else has the problem.  They don't see the need to make any changes. They can always find a new audience.

A major similarity is that their sensory input of social cues (facial expression, sound of voice) is altered.  The AS kids just don't see it till it's pointed out and learned (Storyboarding works well with these kids. Just learning simple social interaction repetitively).  BPDs tend to see social cues as negative and victimizing.  They leave little opportunity for learning new interpretations. Unless they are in therapy, with meds to calm down their emotions.     

PEOPLE WITH ASPERGER'S DO NOT AUTOMATICALLY LACK EMPATHY. 

They've got problems with interpreting social cues up the wazoo, but that's not the same as not caring.  Do some of them, after years of being told they lack empathy, decide to give it up and say "Screw it, I'm not good at it anyway?"  Sure.  But the stereotype of individuals with autism or aspergers lacking empathy was perpetrated by Anna Freud way back in the early 1900's.  Know what else she said about autism?  That it was caused by cold or bad mothering.  Oopsy.  Turns out she was wrong.  Can you imagine the guilt and pain this admittedly well-intended and frequently brilliant woman caused countless mothers with that false statement?  I've seen some of it first-hand.  I've also worked with dozens of children with autism and Aspergers and not one of them, not one, lacked empathy.  Understanding?  You bet.  But empathy?  Oh the stories I could tell... .

You see, the way our brains record and interpret facial expressions, languages, and other sensory input is just different.  We can see the differences in MRI's, but explaining them is still a work in progress.  When there are such basic differences with fairly simple abstract patterning (say ascribing an emotion to a face in a photograph - lights up a totally different part of the brain for individuals with an Autism Spectrum Disorder) then adding the complexity of human relationships, learning to read and write, to make friends, all of that is innately harder for anyone with a developmental disorder, but this one is particularly isolating.  Piaget's work on the developing moral judgement of children is relevant here.  Group pretend play can be overwhelmingly complex and disorienting for a child with aspergers or autism, and yet, without learning to extend one's own internal state or to "project" emotions on one's peers, and then shape that knowledge with feedback from the subject, how does any of us ever "empathize" with anyone else?  Is it "manipulative" to use knowledge of a person to act in ways that influence them?  What if that knowledge is as simple as a common language, and I'm asking someone to tell me the time?  That's not manipulative, m_in_pain, unless you're going by strict denotation.  Connotatively, though, if a person is reasonably aware of the terms of an exchange, then it's not seen as manipulation.  We tend to reserve that word for literal or emotional deceit and entrapment.  Just saying.

Kids with autism or aspergers need extra pretend play and social integration, sure.  All kids need it, they just need more.  But the irony is that many of them grow up feeling so lonely, that when they DO find someone that "gets" them, they are the most loyal, grateful, affectionate, soft-hearted cuddlers a behaviorist can work with.  "I want talk better please."  If they didn't care about people, why would they be so eager to work at connecting with them?  And they are.  They really are.

Will be interested to read the professional opinions on here.  I don't see empathy itself as the blank slate.  But it's a big topic.

M.

In the "heat of the moment" - whenever we're triggered by something (there is a lot to trigger us when we're not recovered) - I doubt whether there's any meaningful self-reflection: I and others have likened it to being an animal caught in a trap, that sheer panic and fear and doing anything to get out of the pain, e.g., chewing one's own paw off, biting the hand of the person trying to free you from the trap, etc.

If you are consumed by your own pain, you won't be aware of others' pain. Other peoples pain will not matter at all. But after an acute episode is over, I think there is enough realisation in most people with BPD that they have hurt the other person. I think, too, that they care they hurt this person. I think that they (we) hate themselves for hurting someone else. Then the shame spiral starts and in order to not emotionally implode with the intensity of the pain, some people with BPD resort to either denial or to attack to relieve themselves of the psychic burden (or they drink, or cut, or whatever.) There is awareness and remorse about hurting the other person, but it's too painful, so it's disappeared, like an informant who got caught by the mob... .

What a f'd up way to exist, eh?

HG, is joho NPD? It's a different type of animal from BPD, it really is: BPD is like a bear; NPD is like a crocodile. I've known one person in my life who was undeniably NPD and he was scary. The disregard he had for his children was mind-boggling. He saw them as objects (and often as obstacles), he used them as pawns, and he wore them like cheap shoes. He treated them bad while thinking he was a good father. He abused them but was too cunning to leave proof or to do so in front of witnesses (turdturdturdhit_!). He was only nice to other people or did things for them for the self-aggrandizement of it - for how it made him look in the eyes of others. And he was convinced he was a paragon of virtue and an upstanding member of the community 

I don't say this often, because I'm pretty inclusive of most people, but I think there is a very, very small minority of people who don't merit our own empathy. I know our hearts should include all peoples, but I just can't include people who are... .I don't use the word "evil" lightly, since I don't believe in it in a religious sense, but there are some people who truly are Old Yeller and need to be taken out back behind the barn and ... .(oops, did I say that?). Ok, I don't really mean that, but it's tempting to think about.

Most people in the world deserve our empathy, since we're all together in this thing called life, and life is hard sometimes. But, a very small minority don't qualify. I know it's not my place to determine that or to judge, but I can't get around what the one NPD person I knew did to his kids. On purpose. Without remorse. With feelings of entitlement. If he was here right now, I'd spit in his face and take his kids and run.

So maybe, HG, joho is not capable of true (selfless) empathy. It's possible. And, if so, maybe she doesn't deserve yours?

Well, I've kinda hijacked the thread there, sorry. After I wrote this fairly vitriolic post, I can see how sometimes people with BPD DO lack empathy, heehee

Lasagna - 3 things come to mind with your nephew, but without knowing the situation, you'll have to fill in the details yourself when considering how potentially accurate they are.

1) Sensory processing issues, or "stimming".  A lot of kids with an Autism Spectrum Disorder have a VERY hard time feeling the dimensions of their own bodies in space, and will react strangely to things like immersion in water, twirling, fabric or cut of clothing, pressure on joints or top of the head, or back, hand squeezing or jaw-rubbing or what-have-you.  In particular, I used to do a lot of occupational therapy techniques on my kids that involved compressing bones going into the joints of wrists and fingers before learning fine motor skills, and many of the less verbal ones would encourage this (it DOES feel good) by grabbing me and "mirroring" it on me before they'd learned to say "Squeeze please".  It's possible your nephew needs some occupational therapy and has some sensory issues.  Same with language.  (It being easier to DO than to SAY for most kids with this disorder.)

2) To see what you'd do.  To get feedback.  To learn if a)it would hurt you b)it would anger you and c)if so, what you would do.  Testing.  Limits.  Power struggle.  Maybe a little anger, too.  Hard to say.

3) He could be modeling something that happened to himself.  Ten year-old boy with Asperger's being grabbed too hard by the wrist, and then having his reaction ignored?  That sort of thing NEVER happens.  The irony is he may have decided to do it to you because he considers you a decent example and/or he knew you weren't going to hurt him back, but ignoring it isn't a good solution for ANY of these three potential off-the-top-of-my-head motives.

Is he in a public school in a special education class in the US?  Without a behaviorist/integration/speech or occupational therapist?  If yes, then well no, I wouldn't count on either that kid or his teacher getting ANYTHING they need.  Also if that's all his parents were able to accomplish at the IEP, and they're "humiliated" by his disorder, then I wouldn't count on anything getting better.  This is generally the time when I'd be giving my kid's parents the phone numbers to their local CAN (Cure Autism Now)chapters and advising them to bring a lawyer with them to mediation.  Save your patience for the kid.  Use the frustration to get him some real services, cuz kiddo is getting yanked.

Just saying, if he'd been one of my clients, he would NOT still be in special ed, especially with a teacher who says he needs to "learn empathy" but doesn't actually teach around it.  Give me a break.  He doesn't even have autism and he's in special ed?  Have you ever spent a full day in your average special ed classroom?  I consider it a good one if the child doesn't regress after a week.  Man.

As for the rest... . bless you.  Great inclusion teachers are so precious.  Heck, great teachers of any kind are precious, but I've got a soft spot for the inclusion volunteers.  I bet your kids brag about being in your class at recess.  See now you're blushing, aren't you, because we've both seen that sort of thing happen.

We don't fully understand what is called antisocial personality, or is sometimes called reactive attachment disorder in children.  I don't know why some people feel glee at sadism.  I don't know what makes some children torture pets or even kill.

I just know it's not Aspergers or autism.

I haven't really ever sought to combine these two realities or worlds if you will, the fact that I had and recovered from BPD and the fact that I have Asperger's Syndrome. However, since I stumbled onto this thread today and along with lots of interesting comments and questions saw in part some very troubling stereotypical stuff I now want to address this. It has been a topic that I have received a lot of email asking me to address.

I am troubled by many of the comparisons, not just here, but in general. It is not an easy subject to seek to understand the differences between BPD and Asperger's. However, I have come to some very deep understanding in my own experience about where BPD ended for me and where Asperger's remains.

I've seen a few who are not trying to forward that Asperger's Syndrome is really the diagnosis that needs to be made when one has BPD - in other words someone on line is trying to forward their own belief that BPD is a misdiagnosis of Asperger's. This troubles me greatly too. Of course we can all have our own opinions but I think this one highly irresponsible, frankly.

I have resisted going here for a number of years but now think I will write an ebook about this where I will lay out what I know from my own experience to be the vast differences between BPD and Asperger's.

I will say also though that I am fascinated on one level as to what it means for an over-all understanding that they can and do co-exist in many. I have to be clear in saying this, however, it is possible to recover from BPD - period. With Asperger's it isn't. But Asperger's isn't a mental illness. It is a very different thing. It is something with which I have found compensatory strategies that do help and do work.

I would just like to caution that it is not always helpful to try to figure these things out without professional knowledge and understanding or inside personal experience.

Stereotypes are everywhere and so I will make this point - Not everyone with BPD is the same and not everyone with Asperger's is the same. There are more male BPD's than most recognize. There are way more females with Asperger's than most recognize. There is a bias (stigma based?) in the diagnosis of each according to gender without doubt but I believe that this is the result of the limited application of the criteria necessary to diagnose each that shows up the stereotypical gender bias of those who diagnose.

There are so many females with Asperger's - and it does manifest, often, very differently in females than it does in males - who go through hell trying to get fair assessments and I know from personal experience just how much gender bias there is in those assessment tools/scales.

As I've worked my way through this question in my own life I guess it is time for me to finally write about. I don't claim to know it all or anything but I do have some strong beliefs and I do feel the need to counter what some put forth that BPD is actually Asperger's. BPD is a personality disorder and  Asperger's is a developmental "disability" on the autisitc spectrum. They are not one in the same. They are not even very similar even though things from the outside can certainly be experienced or subjectively thought to be similar.

Let me just also add on the subject of empathy. As with all other things that are general descriptors of BPD or of Asperger's Syndrome, it is so important to remember the individuality of each person with either BPD or Asperger's or those who may have both.

When I had BPD, though I had a deep capacity for empathy, it wasn't something I expressed often, outwardly. The punitive nature of BPD often holds borderlines back from showing any empathy they may well feel somewhere inside. Of course also, empathy is compromised to varying degrees in those with BPD due to splitting and other defense mechanisms.

In the group therapy process I was in when I recovered from BPD I learned a lot about just how much empathy I actually do have. More importantly, I learned how to express it. I also learned how choosing to be punitive or that type of thing compromised my ability, back then, to empathize.

When those with BPD are caught up in borderline maladaptive defense mechanisms often they end up being quite detached, aloof, uncaring, anything but empathic. This is not a total indicator of what they may feel at other times however. But the consistency can be lacking for sure.

I now also understand that my expression of empathy doesn't always make it across the divide between myself and those who do not have Asperger's.

As far as empathy and  Asperger's Syndrome goes, well, it's a thing that is used as an across the board descriptor or trait - "lack of empathy" when really, while that may be true in some, and I tread gently in venturing this observation but it is made from personal experience - my own and many males with AS that I know - it would seem (and of course there are individual differences to be taken into account among males with AS) that the manifestation or presentation of Asperger's, if you will, in many males, does impact their ability to empathize or feel or understand empathy moreso than is the case for females with Asperger's.

Again, I am a deeply empathic person but the expression of it in actual personal interaction can be challenging for me still re having Asperger's or I can be being empathic with someone and lack the facial expressions or even voice tone that is most associated with empathy.

My point here is that those of us who have Asperger's often do not lack empathy but our expression of it may often not quite match what the average expectations are of those who are Neuro-Typical - the AS world vernacular equivalent of the non borderline smiley  It's an example of where communication can go awry due to the nature of difference and not because something, empathy, in this case is lacking at all.


I think that makes a lot of sense. And it raises a very important difference between Asperger's and BPD as well. Most with Asperger's Syndrome don't "get" the context or realize a lot of attempts at humour, interpersonally, or in a "social context" which isn't the same as being triggered is for those with BPD. However, that said, some with Asperger's can react with anger or get very upset. I find myself I feel a little embarassed and then just say, "Oh okay" once I am told they are kidding and I can then begin to see the humour.

But your point about BPD and the polarized ways of thinking wherein one can't understand how one could be teased or even criticized and still be liked - the black-and-white thinking in that is a common borderline thing for sure.

I wish I could explain how otherwise intelligent people (Asperger's I mean here) don't "get" these things. It is something that I know people in my life have had to learn about me and have found hard to understand because it is very different from my intellectual understanding of things for example.

I'd also just like to add that a primary difference to keep in mind between BPD and Asperger's Syndrome is the cause of each. BPD, despite what many are saying about it being a "brain disorder" - which I don't agree with - likely has a mixture of causes if you will. I happen to think that the "nurture" - as in lack of it - argument is stronger than the "nature" argument. BPD, of course, is a personality disorder and therefore a form of mental illness. Whereas Asperger's Syndrome is what they call a Developmental Disability (most of us feel more blessed and gifted by strengths re the Asperger's than "disabled" however) which is in the brain's hard-wiring.

What happens to Asperger's kids when they grow up? Do they turn into BPD adults?

I am a primary school teacher and have taught a number of students with Asperger's Syndrome. They are the children who show no empathy for others, prefer thier own company in social settings and often participate in parallel play.They are usually intelligent. They are often physically awkward or clumsy. They learn to relate to others by imitating what they do and say rather than having natural responses come from the 'heart'. A little Asperger's boy once told me that he didn't feel sad at his Grandmother's funeral but he made himself cry because he thought that's what his mum would want him to do. I see so many Asperger's traits in my uBPDh that it freaks me out.

I, too, work with children with special needs and have worked with several on the autism spectrum, but I see BPD as a completely separate diagnosis.  I'm not a parent of a child with autism, but I generally witnessed students who had a lack of affect and the characteristic monotone voice.  Their emotional responses weren't typical of other kids their age, not to say they didn't have emotions, but they were different and expressed at strange times.  My BPD had a lot of charisma, was actually very intuitive with people's feelings, and this is characteristic of BPD.  Many high functioning BPDs are very popular and successful as long as they aren't in love with you. The closer the bond, the higher the dysregulation b/c of the fear of abandonment.  This fear doesn't necessarily exist with Asperbergers.  They have trouble self-soothing and may resort to behaviors (flapping) etc. that can interfere with social interactions.  The pwBPD feels deeply and expresses these feelings with vigor.  They just vascillate from black to white.  The person with Asperberger's may have trouble accessing the feelings and bonds.  That's my two cents worth.

I have another tidbit to add... .

My son isn't one bit bothered by his emotions, other people's emotions, etc.  He's happy and enjoys his life.  But he doesn't sense what other people are feeling, ever.  He comes right out & asks:  "Mom!  Are you feeling happy?  I can't tell."

My BPD husband, on the other hand, senses other people's emotions and it can be a trigger for him.  He sees emotions, but reacts very different from the way my son does.

The independent Australian film Mary & Max is about a girl who seems like she could have BPD, and an Aspie.

Another key difference I thought of---

A pwBPD can predict another person's emotional responses, an Aspie lacks the emotional awareness to do so.

As such, a pwBPD will engage in certain behaviors to elicit a particular response from their partner.  An Aspie will seem more unaware of how their behavior or language affects another person, and they appear not to care.  What I have learned is that untreated, a pwBPD will get worse with age as they get more intermittent reinforcement for their behavior, but an Aspie will learn to imitate others or learn from other's reactions and therefore seem to fit in better, socially, with age.

These are not related in any way.