In this episode, Dr Roger Henderson explores the pathophysiology, clinical features and management of myasthenia gravis, an autoimmune disorder affecting the neuromuscular junction. It highlights how antibodies, most commonly against acetylcholine receptors, impair neuromuscular transmission, leading to fatigable weakness that worsens with activity and improves with rest. The discussion emphasises key clinical presentations, including ocular, bulbar and proximal limb weakness, alongside the risk of life-threatening myasthenic crisis. Diagnostic approaches are reviewed, focusing on antibody testing and electrophysiological studies. Management strategies include symptomatic treatment with acetylcholinesterase inhibitors, immunosuppression and thymectomy in selected patients.
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