Redness with small bumps on both sides of the cheeks may be caused by diseases such as keratosis pilaris, rosacea and eczema. 1. Perifollicular keratosis: It is usually characterized by normal-skinned or reddish pimples, commonly found on the face and upper arms, accompanied by varying degrees of perifollicular erythema. Its etiology is considered to be related to vitamin A deficiency and genetic factors. 2. Rosacea: usually manifested as redness of the skin, dilated capillaries, papules, etc., mostly on the face, and its causes are related to immune inflammatory response, impaired skin barrier function, and hereditary factors. 3. Eczema: common in the head, face and other places, the skin is often manifested as erythema, pimples and blisters, etc., the formation of the cause may be genetic, microbial infections and chronic infectious lesions and other factors. The causes of redness on both sides of the cheeks with small bumps are more reasons, it is recommended that patients seek medical examination to clarify the cause of the disease.