Red and itchy palms may be caused by eczema, contact dermatitis and ringworm. 1. Eczema: an inflammatory skin disease, the specific cause is not clear, may be related to a variety of internal factors, some external factors can also trigger or aggravate the condition. Patients mostly manifested as pimples, redness, swelling, itching and erythema of the affected skin and other symptoms. 2. Contact dermatitis: when the patient comes into contact with certain allergic and irritating substances, an immune response occurs in the stratum corneum of the skin, resulting in redness, swelling, itching and other symptoms of the palms of the hands. 3. Ringworm: mainly caused by fungal infections, such patients usually show up as red spots, pimples, itching and scaling, keratinization and other symptoms, which may lead to red and itchy palms. Therefore, it is recommended that patients go to the dermatology department of the hospital in a timely manner to clarify the cause of the disease and target treatment.