Skin allergy and pigmentation. Problem?

I have allergic skin. Different types of skin allergic problems incurred since my childhood. I had scurf type skin problem when I was 15 to 20. After that there was some sort of itching, rashes at pubic areas. Then I had been suffering with itching and skin blow in the innerwear tighten parts, upper and lower lips and some of the body parts. Now I am suffering with ringworm kind of skin problem, itching and rashes on hand, pubic area. Can I recover from all these skin concerned allergic problems? Another big problem is excess body heat and sweating. I can't control sweating. I sweat even in winter season. What is best the treatment and solution for this problem? May I get better treatment for this problem? Another problem is pigmentation. My face looks very dark when compare with other body parts. Also pigmentation affected in underarms, groin, pubic area, neck, knees etc. High amount of hair fall  is another big issue. I wish to get better treatments for all my problems.