Pheochromocytoma-episodic flushing, htn, headache, new onset htn in younger patient
Cushing's disease-abdominal striae (not very specific in Baltimore), new onset hyperglycemia, classic electrolyte abnormality: hypokalemic metabolic alkalosis
Primary Aldosteronism-new onset htn and hypokalemia
Hyperparathyroidism-htn and hypercalcemia
Aortic coarctation-younger patients (even young adulthood), unequal upper and lower extremity blood pressures
Sleep apnea-typically obese patients (but not necessarily), excessive snoring, day time sleepiness (again, not specific)
Thyroid disease (hypo or hyper)-signs and symptoms of thyroid disease
Although most of the time the patient will end up having essential hypertension, these entities should at the very least be considered.
