5 days ago I had routine blood work done and while the needle was still in my arm as the technician untied the tourniquet, a burning stinging pain shot down me forearm...almost made me pass out it was so painful. Now I am experiencing pain when I straighten me arm. What can I do about this and what does this mean?
Signs of infection are pretty obvious. It is unlikely there can be a deep infection without it being red/hot/purulent, etc. There can also be bruising or just plain irritation. In theory a local nerve can be injured. These get a bit better over time and probably do a bit better with stretching the area through its normal range of motion and perhaps heating pad and aspirin. Cannot say in you particular case without seeing it directly.