This condition involving the immune system attacking the thyroid gland now affects at least 14 million Americans and up to 7.5 percent of people globally.
Sickle cell disease is the most common inherited blood disorder in America.
While the exact cause of fibromyalgia is unknown, effective treatment and management strategies are available.
The condition causes extreme physical and mental fatigue that lasts for at least six months and more often affects women than men.
