A member asked:

My friend has a raised hard bump behind her left ear at the top next to the hairline, its painful to touch and swollen.

A doctor has provided 1 answer

Cyst: This is either a sebaceous cyst (epidermal inclusion cyst) or a trichilemmal cyst. There is a small chance of this being a lymph node, but if the overlying skin is red and it looks like it is coming to a head then it is the former. They are benign. Treatment when inflammed is a moist heat pack several times/ day and time.

Answered 7/29/2017

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