The most common causes of many small red dots on the body are the following: 1. If small red dots appear on the body in summer and accompanied by obvious itching, consider the mosquito bites caused by the obvious itching, it is recommended that the local use of dermatol ointment for application. 2. Patients with follicular keratosis, the skin will appear symmetrical warty red-brown papules, more practice seen on the trunk and head. It is recommended to use local salicylic acid inhibitors for treatment. 3, infants and children appear many small red dots on the body, the most common cause is infant eczema, it is recommended to keep the skin clean, dry, local use of eczema cream for application.