Myasthenic syndromes
The neuromuscular junction is vulnerable to autoimmune attack both
at the pre-synaptic nerve terminal and at the post-synaptic muscle membrane.
Antibodies directed to the nicotinic acetylcholine receptor at the muscle surface
are the cause of myasthenia gravis in the majority of cases. Myasthenia gravis is
an acquired condition, characterised by weakness and fatigability of the skeletal
muscles. The ocular muscles are commonly affected first, but the disease often
generalises. Treatment includes symptom control and immunosuppression.