رجل عمره ٣٣ سنة جاء بضعف مفاجئ في الأطراف بعد وجبة كبيرة غنية بالنشويات، والبوتاسيوم ٢٫١، وعنده أعراض فرط درقية (نقص وزن وخفقان)، والنبض ١١٢. ما الحالة الأرجح؟

A 33-year-old man develops sudden limb weakness after a large carbohydrate meal. Potassium is 2.1, and he has hyperthyroid symptoms (weight loss, palpitations); HR 112. What is the most likely condition?

1. Guillain–Barré syndrome
2. A brainstem stroke
3. Thyrotoxic periodic paralysis
4. Simple bacterial food poisoning

Answer: C) Thyrotoxic periodic paralysis. Thyrotoxic periodic paralysis, commoner in men of Asian descent, results from potassium shifting into cells after carbohydrates or exercise. Potassium is given cautiously with a beta-blocker, and the hyperthyroidism treated.