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.

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Why do the outer rims of my ears feel warm to touch and have red itchy small bumps?

Red itchy rash ears. Often ears are first to be affected if there is an allergic reaction to hair dye. Ears are swollen, red & itchy with small vesicles. Ingredient in hair color that does it is paraphenalinediamine, component of hair dye that gives it black color, present in all hair dyes except bleached blond. If this happened after dying your hair, please see derm as reactions can be severe & worse w/each exposure. Read more...