Clinical Reasoning: A 26-Year-Old Woman With Recurrent Pain, Weakness, and Atrophy in Bilateral Upper Limbs During Pregnancy and Puerperium.

We present the case of a 26-year-old woman with recurrent episodes of severe pain, weakness, and atrophy in her bilateral upper extremities during pregnancy and puerperium. She reported 2 similar episodes at ages 5 and 10 years, after which she fully recovered. On examination, we observed significant atrophy in her bilateral upper extremity muscles with decreased strength.