Itchy palms with erythema may be caused by eczema, contact dermatitis, ringworm and other reasons. 1. eczema: the disease belongs to a skin inflammatory diseases, occurring in the head and face, behind the ears, hands and feet and other parts of the hand, when the hand with eczema, can be manifested as the presence of local skin pimples the size of rice grains or herpes mounds, and itching symptoms are more pronounced, and some patients may also be accompanied by localized skin lumpy erythema, which may result in the itchy palms of the erythema. 2. Contact dermatitis: common in allergic people, due to contact with detergent, paint, soap and other items, is likely to cause an allergic reaction, may cause the affected area of the skin itching, erythema. 3. Ringworm: When the hand skin is infected with fungus, there will be red spots, pimples, blisters and other manifestations on the palms of the hands, accompanied by itching and other symptoms. Itchy palms with erythema, may also be caused by other reasons, it is recommended to seek medical advice as soon as possible, clear triggers, by the doctor’s guidance for targeted treatment and conditioning.