The bacterium h.pylori is primarily implicated in the development of gastrointestinal disorders, and some studies have shown that this infection may also affect the development and severity of symptoms. neuromuscular conditions, such as multiple sclerosis, Alzheimer's disease, Parkinson's disease, and Guillain-Barré syndrome.

Autoimmune disease is a disease that occurs when the immune system loses the ability to distinguish between foreign antigens and self-antigens. Autoantigens are components of the body that, for some reason, become foreign. The body's autoantibodies fight against these self-antigens, causing autoimmune disease.