Vein puncture : It will most likely be ok. Use cold compression a couple times a day. If it persists after 4-6 weeks you might want to see a physician.
Answered 11/23/2014
5.5k views
Hematoma: It seems that you had bleeding following the vein puncture. The blood gets trapped around the vein and under the skin. This results in usually a black and blue mark which over several days will turn a yellow color and then resolve. It could also get hard for a few days. Wet heat to the area will help it to resolve. This is not serious.
Answered 6/19/2018
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