Hair thinning after anorexia? (Photo)

This would need to be reviewed in more detail so please see your dermatologist. In some cases, prolonged hair cycle changes in individuals with anorexia leads to maintenance of these cycle changes (and failure to regrow) or in some there is progressive follicular miniaturization leading to diffuse female pattern hair loss. Blood tests are essential and in this case a more extensive panel. Some of the tests I frequently order in such cases would  include the basic panel plus zinc, serum albumin, selenium, ferritin, copper and a few others. Evaluation of the endocrine axis is also important and hormonal tests would be needed - especially estrogen, progesterone,  cortisol, thyroid.  Please see your physician for a compressive evaluation of these issues.

It is not an unusual story you are telling. People with possible genetic hair loss who precipitate the hair loss with anorexia, might not gain back their hair volume when eating becomes normal. See a dermatologist who specializes in hair