It are often either an autoimmune or congenital neuromuscular disease that leads to fluctuating muscle weakness and fatigue. In mostly cases muscle weakness is caused by moving antibodies that chokes acetylcholine receptors at the postsynaptic receptors at the postsynaptic myoneural junction . The hallmark of myasthenia is muscle weakness that worsens after periods of activity and improves after periods of rest. Certain muscles like people who control eye and eyelid movement, countenance , chewing, talking, and swallowing are often (but not always) involved within the disorder. A myasthenic crisis may be a medical emergency that happens when the muscles that control breathing weaken to the purpose where individuals require a ventilator to assist them breathe. It’s going to be triggered by infection, stress, surgery, or an adverse reaction to medication. Approximately 15 to twenty percent of individuals with myasthenia experience a minimum of one myasthenic crisis.