The clinical features of skin disease included: (1) the important trigger factors for onset were mostly sunny (41.1%), unclean water (18.7%), and heat (5.6%); (2) 60.7% had no functional symptoms; among the rest, itching is a major symptom (38.3%); (3) the locations of most skin lesions were head and neck (53.3%), nail and hair (22.4%); and (4) 16.8% of individuals showed skin injury at more than 5% body area, while 49.5% affected 1 - 5% of the body area.