手经常潮湿可能预示患有甲亢。手发麻或发痒表明缺维生素或患有糖尿病。头发枯黄、无光泽预示缺铁和缺乏维生素 B。头发突然脱落是患免疫性疾病(比如艾滋病)的征兆。皮肤上出现小疤、脓疮或者皮肤的某些部位发红、发痒,特别是出现足真菌病,这是患糖尿病的报警信号。小腿肿胀可能预示肾脏或肝脏受到损害或患心力衰竭。膝盖下胫骨肿大可能意味着甲状腺机能亢进。突发性跛行和小腿肚软弱无力是脑 Frequent wet hands may indicate hyperthyroidism. Nerves or itchy hands indicate lack of vitamins or diabetes. Brown hair, matte indicates iron deficiency and lack of vitamin B. A sudden loss of hair is a sign of an immune disease such as AIDS. Small scars appear on the skin, abscesses or some parts of the skin redness, itching, especially the emergence of foot fungal disease, which is a warning sign of diabetes. Calf swelling may indicate kidney or liver damage or heart failure. Enlargement of the knee under the tibia may mean hyperthyroidism. Sudden claudication and calf weakness is the brain