anxiety
"I just started this medicine two weeks ago.  I'm 5'5" and 99 lbs.  I was suffering also from extreme anxiety.  I've used one to two mgs of Xanax to sleep for years.  The sleep doctor I see decided to add Remeron to the Xanax and I'm so pleased with the results in so far as anxiety and especially my appetite.  I've gained 5 lbs in the first two weeks and would like to get back to about 118lbs or so. "