A specific type... I'm not sure if I have seen that. The ones I have/had conversations with are: ISFJ, ESFP, ESTP, INTJ, and INFJ.
Mine started with the need to cleanse myself... after internalizing a traumatic occurrence. It started concurrently with other obsessive compulsive habits... e.g. cleaning shoes and makeup containers with hydrogen peroxide.. as well as removing as much as possible.. throwing out anything that wasn't a necessity. I used tables and charts to record everything, even though I ate the same thing every day. I did everything in 2's. I was obsessive with exercise. It was that exhausted feeling that I really liked... probably a chemical thing? After a few years of that I went into a depression... I assume years of a lack of certain nutrients and sleep can't be entirely unrelated to that outcome. I think it can look very "J", but I'm definitely not "J"... I have heard that strong Ti can have qualities that mimic "J"..?
There is a lot of resentment directed towards the people who try to stop it... and really, I don't think anyone can stop it, even the individual.. to an extent. You almost refuse to consider it unhealthy... actually, I remember thinking I was very healthy. At the same time, I'd wear ankle weights under my jeans if I had a doctor's appointment, cover bruises with concealer, wear looser/thicker shirts when not only hip bones had to be concealed... if you know what i mean, blame back spasms on swimming, etc.
In the journals I used to keep I commonly wrote about disappearing-- just that it would be nice to get away. The other part stemmed from a need to be accomplished. It made me feel disciplined. I attract girls with eating disorders. When the topic comes up, a common statement is, "I don't know if I'll ever be able to do something as well as I did this." One common conclusion is, "I have to get outside of myself." ....IN?