This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Of or relating to an immune response by the body against one of its own cells or tissues.

adj. Of or pertaining to autoimmunity.

adj. of or relating to the immune response of the body against substance normally present in the body

"Arava works by blocking an enzyme that's involved in autoimmune inflammation."

autoreactive   

allergic    degenerative    X-linked    neurogenic    systemic