Acetylcholine receptor antibodies primarily occur in the case of Myasthenia Gravis, which represents a neuromuscular autoimmune disorder. However, consulting a neurologist is essential to obtain precise diagnosis and treatment. 

Acetylcholine receptor antibody is a type of protein usually found in the blood of people with myasthenia gravis. The antibody affects the sending of signals from nerves to muscles. The presence of acetylcholine receptor antibodies confirms the diagnosis of myasthenia gravis. Almost half the people with ocular myasthenia gravis also have this antibody in their bodies. However, the lack of this antibody is not enough to rule out myasthenia gravis. About 1 in 5 people with  myasthenia gravis have no signs of this antibody.