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23 years
My heartrate was:100 it happens to me at work on my desk,fast beating,long breaths,pain left chest,i start feeling cold,headache.it's stress?wt to do?
Jan 15, 2015

Dr. Zakia Dimassi Pediatrics
It could very well be stress, or anxiety attacks, but an organic cause must be ruled out initially. You need to get examined by a physician to check that your pulse is though fast but has a regular rhythm, and examine your thyroid gland for any enlargement; he/she may choose to order a couple of blood tests, primarily a CBC (complete blood count) and iron studies (iron level, ferritin) to rule out iron-deficiency anemia (quite common in the menstruating females population), and thyroid hormones (thyroid stimulating hormone "TSH" and thyroxine "free T4") to rule out hyperthyroidism (over-active thyroid gland), both of which may produce rapid pulse and shortness of breath and sometimes headache.
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