hey my fiancé is in prison he have the symptoms of anal abscess..draining of pus sometimes with bleed with no pain. However he is concerned about his weight loss in his buttocks and thighs. He is very athletic, his upper body is muscle and his lower body is losing weight. He has seen the doctor and then gave him a lot of tests ( hiv test , colonoscopy) but they say nothing wrong..he is still the same weight but losing muscles in his buttocks and thighs please help.