For more than 30 yrs I have terrible itching on the body.Last 5 yrs I am unable to bear the radiation of heat and sun. When atmospheric temperature shoots up beyond 31 degrees skin become uncomfortably greasy and sticky. Lips has become red with irritation. Lot of white heads appear on head and a little on body. These are coming out with an itching. Frequently sprains hands and legs.Some times shooting pain on waste. What is your diagnosis and what is medicine to cure and how many days/months/years will take to cure completely.