Too much of sexual desire causing overheat in body. legs and hands are getting too itchy, i avoid during days. but when i sleep, i will rub my legs, morning the wound will be looking like burn marks... please help..?

Skin disease: skin disease has nothing to do with sexual desire, and your feeling of "too much desire' may be just normal for your age. Itchy skin may be just dry skin but the way you say it, you should see your doctor. It can a fungal infection that needs treatment, vs skin inflammation [exzema] that need steroid cream which power depends on the severity of the issue. Do not be late for treatment.

Nocturnal itching: I doubt a connection between over exuberant sexual desire causing body heat and itching when trying to sleep. If excessive dryness of your skin is a problem, apply a moisturizing lotion after a shower while your skin is still is somewhat wet to lock in oils. If symptoms persist, get evaluated by your MD A cbc, thyroid blood test, and blood sugar are some important tests for your problem.