- Chronic renal disease
- Idiopathic seborrhea
- Hypocalcemia
- Hypercalcemia
- Malabsorption syndrome
- Vitamin D toxicity
- Barbiturates
- Corticosteroids
- Magnesium containing antacids
- Some diuretics
- Digoxin
- Excessive thirst
- Excessive urination
- Anorexia
- Tremors
- Seizures
- Twitching
- Stiff Gait
- Changes in behavior