<s>[INST] i was diagnosied with as about 3 years ago ish, i had a flare up yesterday which was a bad one, when i woke this morning i had a tingling in my left hand, i didnt think anything f it but it still has gone away, its now 5 hours after i first noticed it, the tingling is in my thumb, little finger and middle finger, it comes and goes further up my arm. thanks [/INST] Hello! Thank you for your question on Chat Doctor! Regarding your concern, your symptoms don't seem to be related to the heart. The most probable cause would be a cervical disc displacement, which is causing a articular pain, or a pinched nerve. Another disorder which could cause this symptomatology would be a possible stroke or TIA. I recommend consulting with a neurologist for a careful physical examination and perform a routine check up (resting ECG, chest x-ray, routine blood test, blood electrolytes, kidney and liver function tests, thyroid hormone levels). A cervical spine x-ray and a brain CT scan may be necessary to exclude the above-mentioned causes. Hope to have been of help! Best wishes,  </s>