A member asked:

Small bump behind my baby's ear.

A doctor has provided 1 answer

Lymph node: Posterior auricular lymph nodes are often enlarged behind the ears of infants as a result of cradle cap, scratches to the scalp or infections of the external ear canal. The mastoid process is a normal bony structure of the skull which is behind, and slightly below the ear. Lymph nodes are generally rubbery in texture and somewhat motile, while the mastoid is larger, hard, and non-mobile.

Answered 8/2/2016

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