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Actor Ashton Kutcher’s rare autoimmune condition, vasculitis, is a disorder characterized by inflammation of the blood vessels that can be life-threatening. Experts say it’s notoriously hard to ...

Vasculitis is inflammation of the blood vessels — the tubes that carry blood throughout your body. Inflammation happens when your immune system attacks healthy tissue by mistake. When blood vessels ...

Infectious meningoencephalitis, characterized by inflammation of both the brain and adjacent meninges, is caused by a variety of infectious agents including viruses, bacteria, fungi, and parasites.