Finger started turning rough, dry, black and getting like paper cuts due to dryness. It was in one finger, now it's spreading in other fingers too.. Having very severe hair loss and  severe dark circles. Consulted a doc, she told skin condition maybe due to chemicals in soap and suggested to use moisturizer and gloves while washing. Took hemoglobin, ferritin, thyroid, zinc serum blood tests as suggested by doc. Only zinc serum value (166)is higher than the normal value, rest all showing normal values.. Dont know what might be the problem, kindly help