Solving the Body's Hidden Messages.

A 34-year-old graduate student arrives complaining of relentless fatigue, a 9 kg weight gain over four months, brittle hair, and a chronic feeling of cold. Her colleagues say she's been speaking more slowly. Her ECG shows bradycardia at 48 bpm. A subtle swelling rings the base of her neck.

A 41-year-old ER nurse is brought in after collapsing mid-shift. She has been losing weight despite a normal diet, craving salty foods, and noticing dark patches on her elbows and knuckles. BP on arrival: 78/44. Serum sodium is low, potassium is high. The on-call endocrinologist taps the chart: 'Tell me which gland just went dark.'

A 28-year-old biomedical engineering intern notices his wedding ring no longer fits, his shoe size has crept from 10 to 12, and his jaw has visibly widened in photos over the past three years. He's been having headaches and tunnel vision while pipetting. MRI suggests a sellar mass.

A 47-year-old patient presents with a constellation no single case can explain: weight loss despite hunger, palpitations, episodic sweating, hypertensive crises, easy bruising, and a thickened jawline. Multiple endocrine axes are firing at once. The board is staring at you. Connect every clue you've gathered across the previous four files.