This strange little bump appeared on my right arm it isnt a bug bite because its internal i can move it and my skin comes away from it its not painful just feels strange almost seems like a bulky vein...i recently had surgery 3 weeks ago and this is the arm they used for the IV....what is it?
Hi. This is looking like a lipoma from your description and the vein lump can not be moving so freely even though it will be under and separate from the skin.