Prolactinoma
Prolactinoma is a usually non-cancerous pituitary tumor that produces excess prolactin hormone. High prolactin can cause irregular or absent periods, milk discharge from the breast, infertility, low sexual desire, and bone weakness in women. In men, it may cause low testosterone, reduced libido, erectile problems, infertility, tiredness, or sometimes breast enlargement. Larger prolactinomas may cause headache or vision problems due to pressure on nearby nerves.
Prolactin can also rise due to stress, pregnancy, breastfeeding, nipple stimulation, thyroid problems, kidney disease, PCOS, macroprolactin, or certain medicines, so mild elevation should often be repeated and properly evaluated. Diagnosis may include prolactin blood test, thyroid testing, other pituitary hormone tests, and pituitary MRI when needed.
Treatment is usually with medicines such as cabergoline or bromocriptine, which can lower prolactin, shrink the tumor, restore periods and fertility, and improve testosterone and sexual health in many patients. Treatment is usually continued for at least 2 years, and sometimes longer, depending on prolactin levels, tumor size, symptoms, MRI findings, and recurrence risk. In selected patients with normal prolactin levels and good tumor shrinkage, medicines may be slowly reduced or stopped under medical supervision.
Surgery is rarely needed and is usually considered only if medicines fail, are not tolerated, or if there is urgent pressure on vision. Women with prolactinoma can often become pregnant safely with proper planning and follow-up. Regular monitoring of prolactin levels, symptoms, vision, and MRI when required is important for safe long-term care.
Acromegaly
Acromegaly is a hormonal condition caused by excess growth hormone, usually from a non-cancerous pituitary tumor. Because the changes happen slowly, it is often diagnosed late. Common signs include enlargement of hands, feet, nose, lips, jaw, or forehead, increase in shoe or ring size, change in facial appearance, excessive sweating, oily skin, skin tags, body odour, headache, vision problems, joint pains, back pain, carpal tunnel syndrome, snoring, or sleep apnea. Acromegaly can also increase the risk of diabetes, high BP, heart disease, high cholesterol, thyroid nodules, colon polyps, menstrual problems, infertility, and sexual health issues. Diagnosis usually includes IGF-1 blood test, growth hormone suppression test after glucose, pituitary MRI, and eye/visual field testing when needed. Treatment often starts with pituitary surgery, and some patients may need medicines such as somatostatin analogues, pegvisomant, or cabergoline; radiation is used only in selected cases. With proper treatment, hormone levels can be controlled, symptoms can improve, and long-term complications can be reduced. Regular lifelong follow-up is important because acromegaly can sometimes come back even after successful treatment.
Cushing’s Disease
Cushing’s disease is a hormonal condition where a usually non-cancerous pituitary tumor produces excess ACTH, which makes the body produce too much cortisol. Cortisol is a stress hormone, but too much of it for a long time can harm health. Common symptoms include weight gain around the face, neck, and abdomen, round face, “buffalo hump,” purple stretch marks, thin skin, easy bruising, acne, poor wound healing, muscle weakness, tiredness, bone weakness, mood changes, poor sleep, irregular periods, infertility, low sexual desire, diabetes, high BP, high cholesterol, fatty liver, and increased infection risk. Similar features can also occur from long-term use of steroid tablets, injections, creams, or inhalers, so a proper history is important. Diagnosis may include tests such as late-night salivary cortisol, 24-hour urinary free cortisol, overnight dexamethasone suppression test, ACTH level, pituitary MRI, and sometimes inferior petrosal sinus sampling if MRI is unclear. Treatment usually involves pituitary surgery, while medicines, radiation, or rarely adrenal surgery may be needed in selected cases. Recovery can take time, and some patients may need temporary steroid replacement after surgery. Long-term follow-up is important because Cushing’s disease can sometimes recur, and diabetes, BP, weight, bones, mood, and infection risk need regular monitoring.
Diabetes Insipidus
Diabetes insipidus is a rare condition that causes excessive urination and excessive thirst. It is different from diabetes mellitus or “sugar diabetes” and is not due to high blood sugar. Diabetes insipidus happens when the body either does not make enough ADH/vasopressin hormone or when the kidneys do not respond properly to it. This can lead to passing large amounts of urine during the day and night, frequent waking from sleep, drinking too much water, dehydration, tiredness, and sometimes high sodium levels. Central diabetes insipidus may occur due to pituitary or brain problems, head injury, infections, tumors, or after pituitary surgery, while nephrogenic diabetes insipidus may occur due to kidney problems or medicines such as lithium. Diagnosis may include blood sugar testing, serum sodium, serum osmolality, urine osmolality, water deprivation test, desmopressin response test, and sometimes pituitary MRI. Central diabetes insipidus is usually treated with desmopressin, which may be given as a tablet, nasal spray, or injection. Water intake and sodium levels must be monitored carefully, because drinking too much water while taking desmopressin can cause low sodium. Special care is needed during fever, vomiting, fasting, surgery, travel, pregnancy, or poor food and water intake. With correct diagnosis, safe medicine use, sodium monitoring, and follow-up, most patients with diabetes insipidus can live a normal and active life.
Nonfunctioning Pituitary Adenoma
A nonfunctioning pituitary adenoma is usually a non-cancerous growth in the pituitary gland that does not produce excess hormones, but it can still cause problems by pressing on nearby structures. Larger tumors may cause headache, blurred vision, loss of side vision, or a “tunnel vision” feeling due to pressure on the optic nerves. They can also reduce normal pituitary hormone production, called hypopituitarism, leading to low cortisol, low thyroid hormone, low sex hormones, infertility, absent periods, low testosterone, tiredness, weakness, low BP, low sugar, low sodium, or poor general health. Evaluation usually includes pituitary hormone blood tests, pituitary MRI, and visual field testing. Small tumors without symptoms may only need monitoring, while larger tumors causing vision problems, pressure symptoms, or hormone issues may need transsphenoidal pituitary surgery. Radiotherapy is needed only in selected cases. Pituitary apoplexy is an emergency where sudden bleeding or swelling occurs inside a pituitary tumor, causing severe headache, vomiting, eye pain, double vision, vision loss, collapse, or low BP. Urgent steroid treatment is important, and surgery may be needed if vision is affected. Regular follow-up is essential because pituitary tumors can recur and some patients may need long-term hormone replacement.
Panhypopituitarism
Panhypopituitarism means the pituitary gland is not making enough of several important hormones. The pituitary gland is a small “master gland” in the brain that controls cortisol, thyroid hormone, sex hormones, growth hormone, and sometimes water balance. Low pituitary hormones can cause tiredness, weakness, weight loss, dizziness, low BP, low sugar, low sodium, cold intolerance, constipation, dry skin, low mood, absent periods, infertility, low sexual desire, erectile problems, delayed puberty, poor growth in children, or excessive thirst and urination if diabetes insipidus is present.
Common causes include pituitary tumors, pituitary surgery, radiation, head injury, infections, inflammation, pituitary apoplexy, Sheehan’s syndrome after severe childbirth bleeding, or hypophysitis. Diagnosis usually includes blood tests such as cortisol, ACTH, TSH, Free T4, prolactin, LH, FSH, testosterone or estradiol, IGF-1, sodium, and glucose, along with pituitary MRI and visual field testing when needed.
Treatment is hormone replacement based on which hormones are low. If cortisol is low, steroid replacement such as hydrocortisone must be started before thyroid tablets, because untreated cortisol deficiency can be dangerous. Some patients may also need levothyroxine, testosterone or estrogen-progesterone, growth hormone, or desmopressin. During fever, vomiting, surgery, injury, or severe illness, steroid doses may need to be increased according to sick-day rules. Patients should carry a steroid emergency card or medical alert ID. With correct treatment, emergency precautions, and regular follow-up, most patients with panhypopituitarism can live a normal and active life.
Hypophysitis
Hypophysitis means inflammation of the pituitary gland. It can happen due to autoimmune disease, pregnancy or the postpartum period, infections, other inflammatory conditions, or certain cancer immunotherapy medicines. It can sometimes look like a pituitary tumor on MRI. Symptoms may include headache, blurred vision, double vision, tiredness, weakness, dizziness, low BP, nausea, vomiting, low sugar, low sodium, irregular periods, infertility, low libido, or low testosterone. Some patients may also develop excessive thirst and frequent urination due to diabetes insipidus.
Diagnosis usually includes pituitary hormone blood tests such as cortisol, ACTH, TSH, Free T4, prolactin, LH, FSH, testosterone or estradiol, IGF-1, sodium, urine tests, and pituitary MRI. Treatment depends on the cause and severity. If cortisol is low, steroid replacement is very important and should be started before thyroid hormone treatment. Some patients may need high-dose steroids, desmopressin for diabetes insipidus, or long-term hormone replacement if pituitary function does not recover. Regular hormone testing and repeat MRI are important because hypophysitis can improve, recur, or sometimes cause permanent hormone deficiency. With proper diagnosis, monitoring, and treatment, most patients can live a normal and healthy life.
Empty Sella Syndrome
Empty sella syndrome means the pituitary gland looks flattened or smaller than usual on MRI. The gland is not really missing; it is usually pressed down, so the space around it looks “empty.” Many people find this accidentally during a brain MRI done for headache or other reasons, and in many cases it does not cause serious problems.
Some patients may have symptoms such as headache, vision problems, tiredness, weakness, dizziness, low BP, irregular periods, difficulty in pregnancy, reduced sexual desire, low testosterone, or milk discharge from the breast. Rarely, it may cause excessive thirst and frequent urination. In some people, empty sella can affect pituitary hormone levels, including cortisol, thyroid hormone, sex hormones, or growth hormone.
Evaluation usually includes pituitary hormone blood tests, MRI review, and sometimes an eye check-up or visual field test. Not every patient needs treatment. Treatment is needed only if there is hormone deficiency, vision problem, or increased pressure around the brain. With proper testing, monitoring, and hormone replacement when required, most patients with empty sella can live a normal and healthy life.
Sheehan’s Syndrome
Sheehan’s syndrome is a rare condition where the pituitary gland is damaged due to severe blood loss or very low blood pressure during or after childbirth. Since the pituitary gland controls many important hormones, symptoms may appear soon after delivery or even many years later. Warning signs include failure to produce breast milk, absence of periods after delivery, tiredness, weakness, dizziness, low BP, fainting, weight loss, low sugar, low sodium, infertility, low thyroid hormone, low cortisol, and early menopause-like symptoms.
Diagnosis may include blood tests for cortisol, ACTH, TSH, Free T4, prolactin, LH, FSH, estrogen, IGF-1, sodium, and other pituitary hormones, along with pituitary MRI when needed. Treatment is lifelong hormone replacement depending on which hormones are low. Steroid replacement is especially important and should be started before thyroid tablets if cortisol is low. Some women may also need levothyroxine, estrogen-progesterone replacement, or fertility treatment.
Patients should take extra precautions during fever, vomiting, surgery, injury, or severe illness, because steroid dose may need to be increased. A steroid emergency card and injectable hydrocortisone can be life-saving in emergencies. With correct diagnosis, regular monitoring, proper hormone replacement, and emergency precautions, most patients with Sheehan’s syndrome can live a normal and active life.