What should I do if my baby has diarrhea and redness around the anus?
A baby’s intestines are relatively delicate, making diarrhea a common occurrence—sometimes accompanied by redness around the anus. So, what should you do when your baby develops diarrhea with perianal redness?
How to Manage Diarrhea and Perianal Redness in Babies
The first step is to address the diarrhea itself. Treating only the redness or irritation around the anus or buttocks—without resolving the underlying diarrhea—will rarely lead to complete recovery. Therefore, identifying and treating the cause of diarrhea (e.g., indigestion or infectious enteritis) is essential. Second, ensure the skin around the anus and buttocks remains well-exposed to air and stays dry; this promotes rapid healing. If needed, a small amount of erythromycin ointment may be applied locally.

After diarrhea, mild redness and swelling often appear around the anus—partly due to irritants present in stool. For babies wearing diapers, residual urine can further irritate the skin, leading to diaper rash. Thus, after each bowel movement, gently but thoroughly cleanse the area and pat it dry. Minimize diaper use whenever possible and keep the area as dry and ventilated as possible to facilitate resolution of redness and swelling.

Additionally, always clean the anal area carefully after each bowel movement to maintain local skin hygiene. You may apply a small amount of calamine or talcum powder, and dress your baby in loose, breathable clothing. We hope this information proves helpful.