Nodular fasciitis is a rare, noncancerous tumor. It can appear in soft tissue anywhere on your body. Nodular fasciitis mimics malignant (cancerous) tumors, which makes it a challenge to diagnose.

Nodular acne develops deep under your skin, causing painful, red bumps. Topical treatments and oral medications can help to clear up nodular acne. All acne begins with a trapped pore. Oil (sebum) ...