Hyperparathyroidism Differential Diagnosis

Differential Diagnosis

The following diseases and factors should be ruled out in the diagnosis of hyperparathyroidism: 

• Familial hypocalciuric hypercalcemia (FHH) 
• Granulomatous disorders (eg sarcoidosis, Wegener granulomatosis) 
• Malignancy (eg bone metastasis, lung cancer, lymphoma, multiple myeloma, pheochromocytoma, metastatic tumors with osteolysis) 
• Medications (eg Lithium, thiazides, antiestrogens, Aminophylline) 
• Milk-alkali syndrome 
• Renal failure (tertiary hyperparathyroidism) 
• Prolonged immobilization 
• Thyrotoxicosis  
• Vitamin D intoxication