Red dots on the stomach may be caused by insect bite dermatitis, folliculitis and eczema. 1. insect bite dermatitis: red dots on the stomach may be insect bite dermatitis, the cause of which is usually related to mosquito bites, the patient’s waist and abdomen and other places there will be red spots, pimples and other symptoms. 2. Folliculitis: folliculitis may cause red dots on the stomach, the cause of which may be related to bacterial and fungal infections, mainly manifested in the follicle as the center of the red papules, or even pustules, the diameter of 2mm or so, can be onset in all parts of the body. 3. Eczema: its cause is not clear, may be related to genetics, environment, diet, etc., the patient will appear erythema, pimples and other symptoms, the rash can be distributed in all parts of the body surface, and some patients will appear on the stomach red dots symptoms. There are many causes of red dots on the stomach, and patients are advised to seek medical examination to clarify the cause.