<s>[INST] I have pressure in my upper left arm that started about 10 am today. It feels like a blood pressure cuff. I was at doctors Thursday for my yearly checkup and nothing was wrong at that time. What can it be? I was putting on compression stockings on my left leg because I had vein laser surgery on Monday. I am worrying about this pressure in my arm. [/INST] Hi Dear, Welcome to Chat Doctor. Understanding your concern. As per your query you have pressure in upper left arm. Well there can be many reasons for symptoms you mention in query peripheral neuropathy, carpal tunnel syn Chat Doctor.  I would suggest you to stay calm if it happens one or twice, apply warm compresses to arm twice a day, do stretching exercises under expert and eat healthy. If symptoms appear again or get worse than consult orthopedic surgeon for proper examination. Doctor may recommend physical therapy, particular exercises along with nerve supplement. Doctor may also refer you to cardiologist if the symptoms will be due to heart problem. Hope your concern has been resolved. Get Well Soon. Best Wishes, </s>