Ive had this lump on the back of my head for many years, its been so long I cant remember when i grew this lump. My mother has one too, that she said shes had for a long time, and she told me its genetic, its extra skin or tissue. A few weeks ago I slipped and fell on the ice and hit the spot where the lump is, the lump became very painful when i touched it, or lay my head down, etc.. It also itches. My mom told me its just swollen and it will heal, and it takes longer for injuries on the scalp to heal, I always keep accidentally bumping it on stuff, like the kitchen cabinets. When i sleep i accidentally sleep on it, and in the morning it hurts pretty bad. If I put my head back it hurts, I believe its because of the neck and scalp skin pushing together against the lump, and causing pain. If there is anyone you can help me identify what this is please let me know. Its been several weeks that it was been swollen and painful, and itchy. I dont have any insurance, and Im scared to go to the doctor, and get billed expensively, but if it is serious and I must see a doctor I wil