Baby mouth full of red dots, may be due to the following causes: 1, eczema: the onset of eczema is often caused by children’s contact with allergens, including the consumption of easy to allergic food, such as seafood, eggs, etc., it is easy to cause the symptoms of local skin red dots. Children are more likely to drool during the teething stage, when the skin is stimulated by a humid environment for a long time can also lead to eczema, resulting in red spots around the skin, parents should pay attention to the hygiene around the child’s mouth, keep the mouth around dry; 2, hand, foot and mouth disease: hand, foot and mouth disease patients tend to be around the mouth and mouth, hands and feet and other parts of the small red spots, and often accompanied by drooling, loss of appetite and other symptoms, parents can also determine the cause of the disease.