Have you heard of lupus, but aren’t really sure what it is or if you need to worry about it? About five million people worldwide are diagnosed with lupus every year, and the symptoms may be hard to pinpoint if you don’t know what you’re looking for.

Lupus is a chronic autoimmune disease: normally, our immune systems produce antibodies to fight off germs and bacteria, but with an autoimmune disease like lupus, something goes wrong with your immune system, and your body can’t tell the difference between harmful germs and your body’s own tissues. So your body produces autoantibodies as a first line of defense that attacks and destroys healthy tissue. Dr. Kristamarie Collman, MD, explained to POPSUGAR that “lupus can affect almost

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