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Microscopic polyangiitis (MPA)

Microscopic polyangiitis (MPA) is an autoimmune related disorder that causes blood vessel inflammation (vasculitis), which can lead to organ damage. The kidneys, lungs, nerves, skin, and joints are the most commonly affected areas of the body. MPA is diagnosed in people of all ages, all ethnicities, and both genders. The cause of this disorder is unknown.

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