title: Primary hyperparathyroidism presenting as fever of unknown origin with unremitting headache.
mesh_terms: D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D005334:Fever / Q000150:complications; D005335:Fever of Unknown Origin / Q000175:diagnosis*; D006261:Headache / Q000150:complications / Q000175:diagnosis*; D006801:Humans; D006961:Hyperparathyroidism / Q000150:complications / Q000175:diagnosis*