differential diagnosis
Last reviewed 04/2022
The other common cause of a localised anal swelling is the perianal haematoma. This lesion is always covered by skin, which distinguishes it from the mucosa-covered prolapsed haemorrhoid.
Another cause of bright red blood passed per rectum associated with the passing of stools is an anal fissure.
Other differentials are:
- rectal prolapse
- anal polyp
- inflammatory bowel disease
- rectal carcinoma