They develop from increased pressure on the skin in and around the anal area. Hemorrhoids can be internal or external.

Hemorrhoids may cause symptoms when they become swollen or dilated. They can either be internal (inside the anal canal) or external. “External hemorrhoids often feel like a bump, whereas ...

A thrombosed external hemorrhoid is an enlarged vein that can be seen and felt just beneath the skin around your anus. An external hemorrhoid affects the veins of the skin outside the anus. The ...