Hello,  I have been noticing palpitations in my chest with a sudden light headed feeling and sharp pain in my head when this happens. I almost fell over last night when this happened.  Should I be concerned? I was last checked for heart palpitations in 2006.  Had a stress test and EKG which all turned out normal. I am hypothyroid and on armour...just put on it five weeks ago.  No other meds or health conditions that i am aware.
Hi AS you are hypothyroid you must be on thyroxine, go get you thyroid profile measured asap, as higher THS can also cause severe palpitations. Presyncope is a state of lightheadedness, muscular weakness, blurred vision, and feeling faint (as opposed to a syncope, which is actually fainting). Presyncope is most often cardiovascular in etiology.  Fot this 2d echo of the heart and a carotid Doppler is advice to rule out the left ventricle functions. Plpitations-Palpitations are feelings or sensations that your heart is pounding or racing. They can be felt in your chest, throat, or neck. You may: Have an unpleasant awareness of your own heartbeat.  Palpitations can be because of life-threatening arrhythmias also hence a 24 hour holder monitoring should be done to find out the nature of the beats thanks