Red dots appear on hands and feet, the usual causes are: eczema, hand and foot moss, insect bite dermatitis, purpura and so on. 1. Eczema: usually in the acute stage of the local appearance of red pimples, often accompanied by itching, so the hands and feet parts of the red dots, may be the acute stage of eczema, should follow the doctor’s instructions for topical glucocorticoid cream, such as halomethasone and other drugs treatment. 2. Hand and foot moss: usually caused by fungal infections, in addition to the patient’s hands and feet appear small red dots will also produce itchy symptoms, the need for timely antifungal treatment, such as terbinafine ointment. 3. Insect bite dermatitis: is due to mosquitoes, fleas and other contact with the skin caused by acute allergic reactions, red dots symptoms, can be applied hydrocortisone butyrate and other drugs for anti-sensitization, anti-itch treatment. 4. Purpura: due to thrombocytopenia, coagulation disorders and other factors or skin vascular problems itself, resulting in red blood cell extravasation into the skin, appearing on the hands and feet of the pressure does not fade the color of the small blood spots. As you can see, there are more reasons for the appearance of red dots on the hands and feet, it is recommended to consult a doctor in a timely manner, improve the relevant examination, a clear diagnosis and treatment.