Re: Still not getting answers about heart!
I have lupus, and have had similar problems with my heart, shortness of breath, etc. Lupus can cause rapid heart rate, shortness of breath, hair loss, weakness, some gastrointestinal problems, headaches, etc. If you haven't been tested for this, I would ask for all the tests that are related to lupus. These are not done on routine blood tests. You want a sed rate, CRP, ANA, chem panel and CBC (probably already done), and a urinalysis for starters. Please also review symptoms of lupus and see if any others match up, like sun rashes, joint pain etc. You also have not mentioned your BP. Some thin people have low BP, and even the slightest dehydration can drop your BP to levels that make you feel awful including tachycardia (fast heart rate), weak, etc. Try to get your BP checked sitting, then after standing 2 minutes. If top number drops 20 points or more- you have orthostatic hypotension, which can be caused by lots of things like meds, dehydration, anemia, low salt levels in blood. People whose normal blood pressure is 90-100 on top cannot withstand much of drop without feeling bad.