I am a 59-year-old woman. A month ago I had a comprehensive, four-hour wellness exam (with every known test to man). I was told I am in excellent health. I am on no medications and have had no major illnesses or operations in my lifetime. I have never smoked or taken drugs. My blood pressure has always been low or normal. Today my entire left arm became very tight. The area in my left arm in the crease (elbow bend) is in continual pain (this is where the vein is that is always used when I give blood). Not sure if I should be concerned or just take aspirin? The rest of my body feels just fine.
Hello, I read carefully your query and understand your concern. The symptoms can be related to a strained muscle. I suggest using a muscle relaxant such as Baclofen three times a day. I also suggest using magnesium supplement for muscle relaxation. Hope my answer was helpful. If you have further queries feel free to contact me again. Kind regards!  Chat Doctor.