1 doctor weighed in:

Bump/back of head/lower left side. NOT cyst or tumor. MRI shows nothing in that spot. At times it causes a tremendous amount of pain. Any advice, info, or recommendation is much appreciated. Have had it for about 5 yrs.

1 doctor weighed in

In brief: Sebaceous cyst

In that area it is most likely a sebaceous cyst.
It is just a collection of retained sebum - a skin oil produced by sebaceous glands. This gland is in the shaft of the hair and keeps the hair nice and shiny. It can be electively excised.

In brief: Sebaceous cyst

In that area it is most likely a sebaceous cyst.
It is just a collection of retained sebum - a skin oil produced by sebaceous glands. This gland is in the shaft of the hair and keeps the hair nice and shiny. It can be electively excised.
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