autoimmune
 oxford
 views  updated May 29 2018au·to·im·mune  / ˌôtōəˈmyoōn/ •
adj.  Med.  of or relating to disease caused by antibodies or lymphocytes produced against substances naturally present in the body: the infection triggers an autoimmune response.DERIVATIVES: au·to·im·mu·ni·ty / -nitē/ n.
 The Oxford Pocket Dictionary of Current English