A lot of small white particles around the anus of infants can be considered as diaper dermatitis, prickly heat or pinworms. 1. Diaper dermatitis: Inadequate diaper changing, diaper material and other factors can cause the baby’s perineum to appear large flushed, the skin can appear clear edges of the white pimples or maculopapular rash. You can use warm water to wash the perianal area, change diapers in time, wear loose and breathable pants, etc., for routine general care, so that the baby’s perianal area to keep dry, breathable, can improve the symptoms of redness. 2. prickly heat: babies sweat and the environment is hot and humid, can appear in the buttocks, perianal and other places prickly heat, the formation of round needle tip size of the dense small particles, can cause itching children. You can keep your baby’s buttocks dry, or apply prickly heat powder for external treatment. 3. Pinworm disease: children infected with pinworm disease, adult pinworms can crawl out of the relaxed anal sphincter at night, a large number of eggs, can cause perianal itching and sleep disturbance, perianal white small threadworms can be seen. Infants with more white particles in the perianal area are advised to go to a specialized hospital in time to identify the cause of the disease and actively treat it, and prevent recurrence.