Injections of botulinum toxin type A — commonly known as Botox — for cosmetic or medical purposes were linked to transient side effects similar to symptoms of myasthenia gravis (MG) in two people detailed in a case report published in the journal Clinical Neurophysiology Practice.

Botox is made from a toxin produced by the bacterium Clostridium botulinum, and its use is increasing, particularly in neurology and dermatology. Its injection can interrupt communication between nerves and muscle cells, and lead to alterations similar to those seen in neuromuscular disorders.

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