Hi, I donated blood about 3 weeks ago, and shortly after noticed discomfort in the bend of my arm, especially after having it bent at the elbow.. Now there is a tingling in my arm as well, from about midway between my elbow and shoulder down to my fingers.  Is this anything serious or will it just go away?
Hello, It looks from your details that most probably you may have mild injury to your nerves during blood with Chat Doctor.  It looks from your details that it is mild in nature. You should wait. Keep your arm in rest position. You may take a multivitamin supplement. This will most probably recover in the next 3-4 weeks. Hope I have answered your question. Let me know if I can assist you further.