I've been having this nagging pain in my left arm for the past two nights, and it went away for a day but then came back. Now it's in my upper shoulder and arm area. Should I be worried about this?
Left arm pain that started at night and now is also present in the upper shoulder and arm area could be due to various reasons such as muscle strain, nerve compression, or even cardiac issues. It is important to monitor the pain and seek medical attention if it persists or worsens. In the meantime, you can take over-the-counter pain relievers like acetaminophen (Tylenol) for relief. If the pain continues, I recommend consulting a healthcare professional for further evaluation and management.