Hi K.,
I have one son who does this too. When he first started, he was maybe 3-ish. He pulled an area out that was HUGE and made him look almost like Friar Tuck. I was DEVASTATED. The only reason I knew anything about this syndrome/disorder/whatever you want to call it, is because my very dear friend's daughter did the same thing. I called her and she told me to cut his remaining hair as short as possible so he could not get his fingers around it to pull it out. I didn't really want to, as I prefer hair a bit longer, but when it got to that large of an area (over the course of a couple weeks) I did what she suggested. It worked for him. The hair grew back and we let it grow out longer again, and it ceased to be a problem. He did start doing it a time or two since then, and I've just said, "If you keep doing that, we'll have to cut it short again." We talk about is something stressing him? He's 8 1/2 now. Perhaps his "disorder" is not as severe as some. My friend's daughter quit when she cut it short too. I would try that and don't make a big deal out of it, just do it. I don't think I'd get medical attention until you have done your own research and tried all other suggestions. I did talk to our family dr., who said, "we can give you an rx"...I'd prefer not to medicate if not necessary. That said, had he found a way to continue doing it, or started on his eyelashes or eyebrows, I would have tried an rx for a while. The main objective is to break the habit.
Blessings, I'll be praying for you. You can email me if you want any other suggestions.
Sincerely,
D. E.