Purpura in infants is a common condition that is divided into two categories, thrombocytopenic purpura and anaphylactic purpura. The initial symptoms of this condition vary from disease to disease, and there may be the following manifestations: 1, extensive pinpoint red spots on the surface of the skin; 2, appearing in patches or as a large bright red rash; 3, egg-sized subcutaneous hematomas; 4, similar to the bruising that occurs after a bump, and other symptomatic manifestations. Infantile purpura can be clarified by the type of purpura after clinically relevant examination.