So i've had this weird bump on my forearm for a few years and always wondered what it is and if its a health risk of some sorts the bump is a little darker than my skin not that thick does not hurt when i touch it
(Please correct me if this is the wrong sub forum)
If it does not itch ,is not sore,does not grow and has a definite outline then it is probably a lipoma under the skin. A collection of fat cells. They can grow where there has been an old injury but often just appear for no reason at all.
If it does not bother you then leave it alone but if it changes at all do see a doctor.