Hand features related to autism.

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I don't remember the exact course that led me to find this, but I recently discovered by accident that I have a single transverse palmar crease on my right hand (you can see my hand at the bottom of that article). This occurs when the two transverse creases which are normally present (the head line and the heart line) merge into a single crease. It's also called a simian crease because many monkeys have a similarly structured hand, but that term seems to be disfavored now. Since I stumbled upon this feature, I've been reading about it out of curiosity. Most of the information I've found has linked it to various genetic disorders including trisomy 21 (down syndrome), but I found this one which connects it to ASD.

Basically, it seems that there are some uncommon hand features that are more frequent in individuals on the spectrum. I don't know if it means anything, but it seemed kind of interesting!

(Please let's not squabble about the site's definitions or presumptions about autism, or anything like that. It comes up EVERY TIME someone posts a link, it's old, and who really cares, and blah blah blah blah. Shut up.)

So, let's talk about hands.

There was an article that came up maybe four months ago linking finger length (especially in women) to ASD's. I can't remember the details, but I remember staring at my own hands for two days afterwards.
edit- whoops, didn't see the 2nd link in original post.

Yes, it's mentioned in this article too. It says that those on the spectrum tend to have a ring finger that's shorter than their index finger. This is the case on my right hand, but not my left.

This ratio (2D:4D ratio) has been a pretty popular subject of study recently, with attempts to link it to things like gender role and sexual orientation. Apparently the more masculine condition has a ratio near 1 or lower (equal length or shorter index finger), and the more feminine condition has a higher ratio (shorter ring finger). It's supposed to have something to do with testosterone, I guess, though this seems to be at odds with what's known about autism.

It's also supposed to be related to various talents including mathematical and musical abilities among others that are often associated with ASD.

hmm...I know my lifeline keeps getting shorter as I age, and the money lines have dissapeared..

My index fingers are longer than the other fingers. Who knew?...

yup dats me!



my rings are longer than my indexes, however.

Both hands on simians....

editted...oh wait maybe I don't....I'm confused as to the placement-none of my lines go all the way across-but two of my lines connect and travel as one.

I can't really read the second article... that menu scrolling thing that overhangs the words in it is driving me absolutely nuts, lol. All I saw was something about abnormalities in the little finger, so I'm not sure how related this is, but both of my little fingers are angled inward. They both look like they have been broken at the ends, but they have not... was that related or is this an open mouth/insert foot moment? lol.

I saw something about the fingerprint pattern, but I have no clue what mine is, lol, and my eyes are horrible so I can't really get a good enough look to make it out, even after I tried inking/stamping, lol. It all just blurs together for me.

They were saying one or the other about homosexuals. (ring v index)

they really dont know what they are talking about yet...still in lobotomy stage.

As a child my ring fingers were longer than all of my other fingers. I recall thinking that my hands looked different from other children’s. No one ever commented on it, though.

Since then, my hands have changed, with my middle fingers being the longest, followed (equally, I think) by my ring and index fingers.

I actually stuffed up my last measurements concerning my fingers when this "issue" came around a few times prior; my ring fingers are longer than my index fingers: 5 mil on the right and 2 mil on the left. I also have other signs/features pointing to an excess of testosterone in my early development, or an impaired ability to regulate it, or something, which has continued throughout my life.

In my case, the extreme male brain theory of autism can probably apply to me.

i don't have the crease thing in my hand. my index and ring fingers are pretty dead-even in length.