Suggest Treatment For Bulging Vein In The Palm Of Hand

About three months ago I had a pretty severe car crash, although It seemed I managed to escape with no injuries, however since then I have noticed a strange bulging vein in the palm of my hand. It's just left of my thumb on my right hand and it gets very sore, and I often feel a kind of pins and needles feeling in it. It has a very strong pulse which although on the surface it looks clear, rather than a blueish colour as veins usually are. The pain gets worse when I use my hand e.g. When I drive, write or eat, and the pain can often extend into my wrist and arm like a dull aching. I have scoured the Internet for some explanation but can't find anything anywhere! Please help! Thank you, Paige.