Howdy my name is Ron. A few years ago I noticed my forehead was itching and i had a head ache. i looked in the mirror and noticed a goose egg or large knot on my head. it went away and happened a few times after. recently i have been getting mild head aches and an itching on my left side of neck that appears to look like a large mosquito bite in the same place and it has came and gone as well it is also right underneath a mole. Followed by the itching and mass on my neck i have had lower right back pain and black stools. I have thought for a while that the back pain was from falling off of a trampoline and landing on a railroad tie when i was younger. But now i am getting worried. i am not in any serious pain, some would say it is a modern discomfort, but its really starting to worry me. any help would be much appreciated. i have been looking into symptoms but i know that i am not likely able to diagnose myself. So I would like to give this a shot. Thanks.