A 26‐year‐old man acutely developed bilateral sensory symptoms of carpal tunnel syndrome (CTS). Neurophysiological investigations confirmed the diagnosis of CTS with findings suggesting conduction block of sensory fibers. Endocrinological studies revealed a hyperthyroidism. He was treated with methimazole and propranolol with improvement of thyroid function. The neurophysiological and clinical follow‐up revealed a progressive improvement of CTS. The echography performed at wrist bilaterally failed to show any rough compressive factors in the carpal tunnel. The clinical, neurophysiological and endocrinological evolution suggest a relationship between hyperthyroidism and acute bilateral CTS.
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Padua et al. (1996) studied this question.
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