1 Cervical dystonia, or torticollis, is the most common type. 2  Cervical dystonia typically occurs in middle-aged individuals. 3  It has, though, been reported in people of all ages. 4  Cervical dystonia affects the neck muscles, causing the head to twist and turn or be pulled backward or forward. Cervical dystonia affects the neck muscles, causing the head to twist and turn or be pulled backward or forward. 2  Cranial dystonia affects the head, face, and neck muscles. 3  Oromandibular dystonia causes spasms of the jaw, lips, and tongue muscles. 4  This dystonia can cause problems with speech and swallowing.
Autoimmune diseases occur when the immune system attacks healthy cells in the body. It seems counter-productive for our immune system to attack our own bodies, but scientists think that there is a naturally occurring level of autoimmunity that is going on all the time in humans and other higher animals.
Autoimmune diseases occur when the immune system, which normally protects you from infections and cancer, makes a mistake and starts to damage your bodyâs own tissues. Morphea (syn. localized scleroderma) occurs as a result of autoimmune fibrosing (leather-like) injury to the skin and sometimes the underlying fat, muscle and bone.