Aged 64yrs male , suffering from high cholesterol, walks and stands too much from 40years, my skin in legs have turned blackish brown.why ? treatment?

Stasis pigment: Your physician can make recommendations which may begin with wrapping your lower legs in ace bandages.

Venous Insufficiency: You could have venous insufficiency/reflux. This is especially true if you have leg swelling at the end of the day & varicose veins. Your red blood cells get into your fat tissue & the cells that clean them up dissolve the red blood cells except the iron in them causing them to turn brown. Unfortunately there is little to do to reverse but you should be worked up for venous reflux specialist.