Common immune disorders include rheumatoid arthritis, psoriasis and Type 1 diabetes. As of 2016, there are 80 known types of autoimmune diseases affecting up to 50 million Americans, according to Healthline.
Rheumatoid arthritis is a disorder where immune system cells attack joints with antibodies attached to them. This results in swelling, inflammation and pain, explains WebMD. Treatments include injections or oral medication that reduces the activity level of the immune system.
Psoriasis is a skin condition where skin cells reproduce too rapidly for the body to shed them all. It causes skin irritation and redness, along with flaky, thick patches on the skin, reports Healthline.
Type 1 diabetes occurs when antibodies in the immune system attack and destroy cells in the pancreas that produce insulin. Type 1 diabetes is more severe than Type 2. Patients with Type 1 diabetes need insulin shots to survive, states WebMD.