Possible causes of red dots on baby’s body include toddler’s emergency rash, prickly heat, measles and allergic skin diseases. 1. Childhood emergency rash: mostly occurs in children under two years old, usually caused by viral infections, with a certain degree of self-healing. Its typical performance for the body first appeared fever symptoms, when the fever subsides, there will be a generalized maculopapular rash, and can be accompanied by runny nose, cough and other symptoms. Therefore, it can be manifested as red dots on the baby’s body. 2. prickly heat: usually caused by the blockage of sweat glands in the ducts, usually seen in hot weather, can appear in the neck, armpits, groin and other skin folds. It can be characterized by the intensive appearance of red papules and pimples. It can also make babies appear to have red dots on their bodies. 3. Measles: It is a highly contagious disease. Usually caused by measles virus infection, it will first manifest as fever, cough, runny nose and other symptoms, and then can appear from top to bottom spread of red rash. So it will also make the baby show as red spots on the body. 4. Allergic skin disease: it can be caused by inhalation, contact injection and eating allergens. The lesions are mostly red papules, erythema, small blisters and other manifestations, can appear in any part of the body, so it will also lead to the baby body long red dots, it is recommended to timely detach from the allergen. All in all, the baby red dots on the body is recommended to consult a doctor in a timely manner, follow the doctor’s instructions for symptomatic treatment.