You may have been told you have lupus, or maybe you suspect you have lupus, but you're not sure. Lupus is an autoimmune disease that affects your immune system, causing it to attack various parts of your body. Because lupus imitates so many diseases, it can have multiple symptoms.     Doctors don't know what causes lupus, but they know that something initiates its appearance and causes your immune system to attack parts of your body. It's important to have your doctor test you for lupus and other diseases should you have some of the following symptoms.


1. Arthritis

Lupus often causes arthritis, leading to swollen, stiff, and achy joints. Sometimes your joints don't swell but are painful. You usually notice arthritis in the mornings. Sometimes arthritis lasts for a few days or a few weeks; sometimes you have arthritis that lasts. Usually, arthritis is painful but is seldom debilitating.


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