• Physiologic
  • Pregnancy
  • Puerperium
  • Up to 6 months after weaning
• Prolactin producing pituitary adenoma
• Medications
  • Phenothiazines
  • Tricyclics
  • Opioids
  • Metoclopramide
  • Verapamil
  • Alpha-methyldopa
  • Isoniazid
  • Estrogen
  • Oral contraceptive pills
  • Reserpine
  • Butyrophenones
• Hypothyroidism (due to elevated TRH)
• Chest wall conditions
  • Herpes zoster
  • Post thoracotomy
  • Fibrocystic changes
• Postoperative stress
• Pituitary stalk compression
  • Craniopharyngioma
  • Pinealoma
  • Meningioma
  • Astrocytoma
  • Metastases
  • Head trauma
• Miscellaneous causes
  • Renal failure
  • Cirrhosis
  • Sarcoid
  • Lupus
  • Carcinoma of lung or kidneys
  • Ovarian teratoma
  • Myoma
  • Eosinophilic granuloma
  • Other pituitary or hypothalamic disease