Myasthenia gravis

A chronic, autoimmune disorder which causes muscle weakness and excessive muscle fatigue. It is an autoimmune condition where the immune system instead of attacking infections such as viruses, mistakenly attacks proteins in the body. In myasthenia gravis the immune system specifically attacks proteins on the muscle called ‘acetylcholine receptors’ (AChRs) which normally receive the signals from nerves which tell the muscles to contract.

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