The top of my ears hurt, they are warm to touch, and they are red. what could be causing this?

Chondrodetmatitis: Chondrodermatitis nodularis chronica helicis (cnh) is a painful inflammatory condition affecting the ear. It is sometimes called winkler disease.Cnh is most often seen in middle-aged or elderly men but may also affect women and younger adults. It results in a benign tender lump in the cartilaginous portion of the ear. The helix (thus helicis) is the top of the ear.