A member asked:

I have a hard knot on top back part of my head. it has been there a while only time it hurts is when a mess with it. doesn't bother all the time?

2 doctors weighed in across 2 answers
Dr. answered

Scalp nodule: there is considerable number of potentials for scalp nodules one of the common causes is folliculitis which is inflammation or infection in relation to hair follicle, other causes include acne, cysts, other skin lesions medical review is required to find out the cause and give you the right treatment

Answered 11/12/2016

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Hard mass: If the mass is boney hard, it may be an exostosis of the skull which is a benign growth and is usually present since birth or for as long as you can remember. If it is less firm, it could be an inclusion cyst which is also benign. It will have to be examined by a physician for diagnosis,however.

Answered 11/14/2016

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