In my dorsal of palm (digital arteries) between two figure, specifically middle figure and next two middle figure having itching as well as having black marks in both the hands. Due to this marks figure skin got rough aftwrds it turns to crack into figure. I have shown this problem so many skin specialist but do not get proper treatment. Kindly inform me this is allergy or disease .what can I do for complete cure from this disease. If require can share pic of my hands.