1. Itching in buttock more on left butt .. Dry skin  all over there.. Bleeds at times .. Dark points in a outline fashion is seen around the area of itching. 2. itching and pus spilling near elbow joint in left arm (for one year- on and off itching- -that area became dark in colour- pus comes at times on applying pressure.. Scales are there which on  scratching bleeds.. 3. Sometimes severe  itching occurs  in the groin area also. 4. My thumb nail in the right hand has got some discoluration   to white at the apex part recently..