### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi...i am 62 ,180 pounds and 25 yrs old,I dislocated hand a few years, thats basically the only history I have..... i was laying down with my head resting on a something in my room, and now their is a lump on the back of my head on the right side, its been their for almost two weeks now and it hurts alot when I touch it and if I should hold my head down for a short period of time and then hold it up straight I would have a strong pain rushing in that area where the lump is and it would go down the back of my head, down to my neck, even when I lay down and the get up to a standing position I would feel this tension where the lump is and it feels like I am getting a headache.... Could u please tell me what this can be, thank u.

### output:

HI, Dear, Thanks for the query from you for your lump on the back of the head.1-I feel concerned that you are serious to know why this head lump has occurred, and why rushing pain occurs when your lay down or raise from lying down positions?2-In my opinion this head lump is worrisome as it has occurred in last 2 weeks with surging / rushing pain when you rise up or lie down along with headache.2-a-In my opinion it appears to be an infected -hematoma/ or Chronic Sub-scalp hematoma with chronic subdued abscess, on the back of the caused due to the head hurting on some hard/sharp object and got infected over a time of 2 was.2-b-The surge in pain while rising up or laying down is due to the changing blood flow dynamics in the infected hematoma-or Chronic Abscess-sub-scalp, which started while resting in your room.4-The headache at the site of the head-lump with localized tension in the lump, indicates the infective-pathology in the head lump -developed over 2 was time.5-Hence I would advise a second opinion from a general Surgeon who would do -CBC, X-Skull. This would give lead on your worry which you expressed about head lump.  5-a-A Chat Doctor. 6-Hence I would advise ER general Surgeons opinion. Hope this would resolve the causative worry of the patient in question 7. If treated on this line, the fearing patient, should not worry you much.8-Hope this would solve your worry of the lump on the rt side of the back of the head.9-Wellcome to Chat Doctor for any more query.