I have an extremely swollen left arm pretty much swollen & tight feeling from shoulder right to wrist/hand it is worst at the top of my arm from elbow to shoulder my veins are showing I also have some broken capilliaries looking a purple colour top of arm area and on my chest area on the same side asf swollen arm - it is an arm that I have previously injured a few years ago in a fall I am not in pain but have had some sharp twinges of pain in and around the inside of my elbow I woke up with this 2 weeks ago I went to Hospital A&E they suspected may be a blod clot but they couldn t see one on an ultrasound scan of my arm - so far the docs I have seen have just not much idea!