Had a massage. Within a few minutes of finishing, I had a large lump- the size of half a grape, on the upper, front of my arm/shoulder. I massaged it, pressed it, and it went down. Now I have a bruise. Just noticed in the mirror that the bruise runs right over a large vein that branches down from my neck into my shoulder/arm. Any idea what this could be?
Hi. Thanks for your query and an elucidated history. This is simply extravasation of blood from a ruptured vein or its small tributary. Usually no treatment is required if you do not fiddle/ play with. This is resolve on its own within a few weeks. Be careful next time you go for a massage.