+Autoimmune disease is a condition where the body's [Immune System](/wiki/immune_system) mistakenly attacks its own healthy tissues. Instead of defending against invaders, it launches an assault on itself, leading to various symptoms and [Inflammation](/wiki/inflammation).
+## See also
+- [Chronic Illness](/wiki/chronic_illness)
+- [Immunity](/wiki/immunity)
+- [Antibody](/wiki/antibody)
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