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A member asked:

Over 2012 i've had ekgs, echo, stress test and blood work and all come back normal except that i just have a fast heart rate. why am i soooo fatigued?

A doctor has provided 1 answer
Dr. Frederman Concepcion answered

Specializes in Cardiology

Need more tests: I would like to recommend to make sure that a thyroid test is done. Hyperthyroidism can cause tachycardia and fatigue and sometimes isan overlooked diagnosis.

Answered 1/15/2013

5.4k views

Thank

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