Home/Topics/Diseases & Disorders/autoimmune disease Diseases & Disorders Immune System & Allergies autoimmune disease Listen Save Share Print Meaning of autoimmune disease: A condition in which the body recognizes its own tissues as foreign and directs an immune response against them. Definition of autoimmune disease A condition in which the body recognizes its own tissues as foreign and directs an immune response against them. Written and maintained by James Murray · Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations. Keep exploringRelated termsMore in Diseases & Disorders → Genetics & Molecular Biology Ig Ig is the abbreviation used in laboratory and immunology reports for immunoglobulin, the family of antibody proteins made by immune cells. Read definition → Cancer & Tumors non-Hodgkin lymphoma Named for what it is not, this family of lymphocyte cancers spans many separate diseases with very different growth rates and outlooks. Read definition → Infection & Immunity WBC The total count says little on its own; which of the five types is raised or lowered is what points anywhere useful. Read definition → Prevention & Risk human papillomavirus vaccine Built from empty shells of the virus coat, so it shows the immune system the right shape while containing no genetic material at all. Read definition →
Genetics & Molecular Biology Ig Ig is the abbreviation used in laboratory and immunology reports for immunoglobulin, the family of antibody proteins made by immune cells. Read definition →
Cancer & Tumors non-Hodgkin lymphoma Named for what it is not, this family of lymphocyte cancers spans many separate diseases with very different growth rates and outlooks. Read definition →
Infection & Immunity WBC The total count says little on its own; which of the five types is raised or lowered is what points anywhere useful. Read definition →
Prevention & Risk human papillomavirus vaccine Built from empty shells of the virus coat, so it shows the immune system the right shape while containing no genetic material at all. Read definition →