I have read, researched about FM being hereditary at times. But always put the thought aside on it, because no one else in my immediate family has any sort of auto-immune disease. My sister, who is two yrs younger than me--34 has been diagnosed with Lupus. She was diagnosed last week. It came on when she started having fainting spells, dizziness. It all started with a doctor diagnosing mitral valve prolapse. She is haveing problems with her heart, its enlarged. The docs are talking surgery to replace or repair the valve. She then started having more symptoms. Pain, achy joints, swollen eyes, hair loss. Then the docs ran bloodwork, and then diagnosed the lupus. The doctors also asked her if anyone in the immediate family has anything like a autoimmune disorder, disease, including Fibromyalgia. And she told them yes, I do. No one else though has anything at all like me and her. I have 4 other sisters, and a brother. Lots of Aunts and Uncles, and none of them have any disease or disorder. So how many others here have siblings, family also with a auto-immune disorder/disease?