Case presentation A 35-year-old female presents with a 10-day history of constant palpitations, weakness, and irritability. On further questioning, she tells you that she has had several symptoms for the past week, including heat intolerance, hand tremor, generalized weakness, inability to sleep, and frequent bowel motions. Past medical history Eczema localized to her hands, which is longstanding. Family history It includes ischemic heart disease in her father, diagnosed after a myocardial infarction at the age of 72, her mother suffers from vitiligo, and her sister has type 1 diabetes. Physical examination The patient has sweaty palms with a marked hand tremor.

Her pulse is regular at 104 beats/min, and her BP is 110/70 mmHg with no postural drop. She has a marked lid lag. What is your diagnosis for this patient? *This Case Challenge is from the Editorial Team of Docplexus and is meant…