Small red spots on a child’s hands can be considered a condition such as hand, foot and mouth disease, allergies or insect bite dermatitis. 1. Hand, foot and mouth disease: there are often prodromal symptoms before the rash, such as low-grade fever, headache, nausea, etc., 1 to 3 days later, the skin lesions can appear on the hands, feet, mouth, initially red rash, but then can develop into a blister with a red halo around it, which is easy to rupture to form an erosion. 2. Allergy: allergic children, hands can be in contact with certain substances after an allergic reaction, in the local formation of red rash, can be accompanied by itching. 3. Insect bite dermatitis: pediatric hands by mosquitoes and other organisms bite, can appear on the skin petechiae, masses or papules, self-conscious itching. Small red spots on the hands of children, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, give targeted treatment or treatment.