<s>[INST] on my right hand , the whole part of the arm s skin got darker(really dark) than the rest of the body, and i got it since i was 4? what kind of disease or problem do i have? [/INST] thank you for the inquiry. try the following ayurveda medicines eladi coconut oil :apply for 45minutes daily over the hand and whole body once in a week and gentle massage. use herbal shampoo or shikka for cleaning. avoid non vegetarian food. Drink 2 litres of eater in a day give me the feed back after 2 months dr.devidas vellodi cochin </s>