It is unlikely that you have a brain tumor that you can feel underneath the scalp. They are typically deeper within the skull. It is more likely a cyst or infection. I would certainly have your physician or dermatologist look at it.
If a brain tumor is of concern, the most reasonable initial test would be a CT scan of the head.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
Medical Weblog:
kevinmd_b
Cheryl
Trish
Trish
Yesterday, I found the lump on top of my head, It was tender and reminded me of a sist. I put pressure on it and I felt an immediate burning sensation behind my right eye and immediately went into the headache mode. A hour or so later I put pressure on it again and the same thing happened. A few hours later I put pressure on it and went into a cold sweat, headache, burning behind my right eye and I felt disoriented and almost as though I was going to pass out. I had NO energy, not even enough to go and sit in an E.R., so I went home and laid down, today, Sunday, I am still laying down and waiting to see if I can get to the doctor in the Morning. Do any of these symptoms suggest a probable diagnosis?