Hypopituitarism: Symptoms, Causes, Treatment
قصور الغدة النخامية
Hypopituitarism means reduced production of one or more pituitary hormones. Symptoms depend on the affected hormones and may include fatigue, menstrual changes or impaired growth. Cortisol deficiency can become dangerous during acute illness.
What is Hypopituitarism?
The pituitary coordinates thyroid, adrenal, reproductive and growth functions. Deficiency does not necessarily involve every hormone and may develop gradually or suddenly. Replacement and monitoring are tailored to the affected hormonal pathways and underlying cause.
Related reading: Diabetes insipidus and water balance.
Symptoms
Features include fatigue, weakness, low blood pressure, cold intolerance, weight changes, menstrual or sexual problems, infertility, and delayed growth or puberty. Excessive urination and thirst may accompany disturbed water regulation. Symptoms require assessment rather than confirming the diagnosis alone.
Causes
Causes include tumors, surgery or radiation near the pituitary, head injury, inflammation and congenital disorders. Severe bleeding around childbirth can also cause damage. Most pituitary tumors are not cancerous, but pressure can impair hormonal function and vision.
Risk factors
Pituitary-region disease, surgery, radiation, head injuries and some inflammatory or genetic disorders increase risk. New deficiencies can arise years after treatment. Previously normal follow-up does not remove the need to reassess new symptoms.
Diagnosis
Hormones are measured at appropriate times; stimulation tests, MRI or visual-field assessment may be needed. Thyroid evaluation includes free thyroxine and TSH: normal TSH alone cannot exclude central hypothyroidism. Medicines that alter results must be considered.
Treatment
Management treats the cause and replaces deficient hormones with monitoring. Cortisol deficiency must be assessed and, when necessary, treated before thyroid hormone is started to avoid precipitating adrenal crisis. Growth, reproductive and water-balance treatments are individualized rather than prescribed as one universal hormone list.
Complications
Untreated deficiency can cause adrenal crisis, electrolyte problems and impaired bone health, fertility or growth. Excess replacement also carries risks. Ongoing symptom and laboratory review is needed; fatigue alone should not guide dose changes.
Prevention
Not every cause is preventable. Follow-up after pituitary surgery or radiation detects delayed deficiencies. People requiring cortisol replacement need sick-day and procedure plans and an alert card; prescribed steroid replacement must not be abruptly stopped.
When to see a doctor
Sudden severe headache with visual loss, double vision or reduced consciousness is an emergency because pituitary bleeding is possible. Repeated vomiting, fainting or profound weakness with cortisol deficiency may indicate adrenal crisis: follow the prescribed emergency plan and seek immediate help.