Not all bumps on a horse’s skin are cause for concern, but it can be difficult to tell the difference between a harmless lump and a tumor. Like tumors, noncancerous lumps can range in size; some ...

Hidradenitis suppurativa is a rare condition that causes painful red bumps to form on or under your skin.The bumps can break open and ooze fluid. It can be hard to diagnose, because red bumps can ...

A Photo Guide To 20 Types Of Skin Bumps You Might Find On Your Body. Dermatologists reveal what's really going on. by Krissy Brady Updated: Mar 04, 2025 4:26 PM EST.