G.B.
One of my friends has it. I have lost contact with her over the years but I know she struggled with it for a very long time. She would let her hair grow and when she would be teaching a higher math class she would tell the students that if they all made above a certain score on the next test she would shave her head. She probably would have done it anyway since the length would be starting to bother her. But they would all work really hard and she would end up shaving it. Then she would keep it so short she could not pluck it for a while then start letting it grow out. She also had no lashes or eyebrows.
The research she found said that a basic nutrient the body needed was lacking and that the plucking of the hair caused that chemical to "make" and be present for a while. So the plucking would stop for a few hours or even a few months. The cause may be different now, that was a few years ago.
It is treatable with medication so it is a biological illness. Not necessarily a mental one so don't be worried about talking to the doc about it. If they don't understand it move to a different doc. Maybe even a psychiatrist but she was getting the meds from her family doc.
I am putting some links in, hers is old and is not functioning anymore. There is a lot of information out there, be sure to follow a doc's advice though. Some things can be dangerous if not supervised by the proper person.
This is sort of her old website, it's gone now but the information stuff is still there. She closed the site down when someone posted a bunch of her personal pictures on the web or someplace public. She fought it because her site was not supposed to be used for that, she felt violated and just abandoned it. But here are the faq's she had on the page:
http://www.oocities.org/~modularforms/trich/FAQ.html
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This site is very informative and as I read through it I was reminded how she worked to stop, rubber bands, strings around her fingers, so many things to try and just stop, it is hard but I imagine that it can be done.
http://stoppullinghairout.com/blog/tag/stop-pulling-hair/
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A very good story on one woman's struggle to overcome it.
http://blogcritics.org/scitech/article/trichotillomania-h...