Conversation: The conversation between human and AI assistant.
[|Human|] Hi I am experiencing sudden onset of tightness in my arms. The onsets are unpredictable and seem to be lasting longer. My last spell was on Sunday and this has left me with pain in my left arm. I have been tested for heart conditions but all test results were negative. Now what?
[|AI|]  Hello, What I feel is that during any cardiac issue the left hand will not become stiff, but it will be painful and difficult to lift as it will feel weaker. Since the cardiac profile is assessed which turned to be normal then it's not related to cardiac. Next, the tightness you mentioned, how is it? Like you feel pain, tingling, numbness kind of symptoms? Of its just tightness of muscle? If you get these symptoms you need to figure out what is the nature of the tightness, and what is the nature of the pain? If you describe the pain and tightness nature than we can come to a proper understanding. Also, for time being you can use hot water fermentation over the neck region and do some simple exercise for the neck and upper limb. But please make sure you figure out the exact nature of the pain if at all you get in the future. Hope I have answered your query. Let me know if I can assist you further.  Jay In Chat Doctor.