GRIM FED:
Granulomas (sarcoid, TB),
Renal faliure
Immobility (esp. long term)
Malignancy
Familial (eg familial hypocalciuric hypercalcemia)
Endocrine (see below for subtypes)
Drugs (esp. thiazide diuretics, lithium)
· Endocrine causes are PATH:
Phaeochromocytoma
Addison's disease
Thyrotoxicosis
Hyperparathyroidism
