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</div><div><span>Pituitary apoplexy</span></div></div>
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<article><div id="d-article"><div class="page-info"><div class="page-title"><a name="start" id="start">
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</a><h1 class="with-also" itemprop="name">Pituitary apoplexy</h1>
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</noscript></div><div class="main"><div id="ency_summary"><p>Pituitary apoplexy is a rare, but serious condition of the pituitary gland.</p></div><section><div class="section"><div class="section-header"><div class="section-title"><h2>Causes</h2></div><div class="section-button"><button type="submit" aria-controls="section-1" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-1"><p>The pituitary is a small gland at the base of the brain. The pituitary produces many of the hormones that control essential body processes.</p><p>Pituitary apoplexy can be caused by bleeding into the pituitary or by blocked blood flow to the pituitary. Apoplexy means bleeding into an organ or loss of blood flow to an organ.</p><p>Pituitary apoplexy is commonly caused by bleeding inside a noncancerous (<a test="test" href="./002236.htm">benign</a>) tumor of the pituitary. These tumors are very common and are often not diagnosed. The pituitary is damaged when the tumor suddenly enlarges. It either bleeds into the pituitary or blocks blood supply to the pituitary. The larger the tumor, the higher the risk for future pituitary apoplexy.</p><p>When pituitary bleeding occurs in a woman during or right after childbirth, it is called <a test="test" href="./001175.htm">Sheehan syndrome</a>. This is a very rare condition.</p><p>Risk factors for pituitary apoplexy in non-pregnant women without a tumor include:</p><ul><li>Bleeding disorders</li><li><a test="test" href="./001214.htm">Diabetes</a></li><li>Head injury</li><li>Radiation to the pituitary gland</li><li>Use of a breathing machine </li></ul><p>Pituitary apoplexy in these situations is very rare.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Symptoms</h2></div><div class="section-button"><button type="submit" aria-controls="section-2" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-2"><p>Pituitary apoplexy usually has a short period of symptoms (acute), which can be life threatening. Symptoms often include:</p><ul><li>Severe headache (worst of your life)</li><li>Paralysis of the eye muscles, causing double vision (<a test="test" href="./001624.htm">ophthalmoplegia</a>) or problems opening an eyelid</li><li>Loss of peripheral vision or loss of all vision in one or both eyes</li><li>Low blood pressure, nausea, loss of appetite, and vomiting from <a test="test" href="./000357.htm">acute adrenal insufficiency</a></li><li>Personality changes due to sudden narrowing or spasm of one of the arteries in the brain (anterior cerebral artery) </li></ul><p>Less commonly, pituitary dysfunction may appear more slowly. In Sheehan syndrome, for example, the first symptom may be a failure to produce milk caused by a lack of the hormone prolactin after delivery.</p><p>Over time, problems with other pituitary hormones may develop, causing symptoms of the following conditions:</p><ul><li><a test="test" href="./001176.htm">Growth hormone deficiency</a></li><li>Adrenal insufficiency (if not already present or treated)</li><li><a test="test" href="./001195.htm">Hypogonadism</a> (body's sex glands produce little or no hormones)</li><li><a test="test" href="./000353.htm">Hypothyroidism</a> (thyroid gland does not make enough thyroid hormone) </li></ul><p>In rare cases, when the posterior (back part) of the pituitary is involved, symptoms may include:</p><ul><li>Failure of the uterus to contract to give birth to a baby (in women)</li><li>Failure to produce breast milk (in women)</li><li>Frequent urination and severe thirst (<a test="test" href="./000377.htm">diabetes insipidus</a>) </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Exams and Tests</h2></div><div class="section-button"><button type="submit" aria-controls="section-3" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-3"><p>Your health care provider will perform a physical exam and ask about your symptoms.</p><p>Tests that may be ordered include:</p><ul><li>Eye exams</li><li><a test="test" href="./003335.htm">MRI</a> or <a test="test" href="./003330.htm">CT scan</a></li></ul><p>Blood tests will be done to check levels of:</p><ul><li><a test="test" href="./003695.htm">ACTH</a> (adrenocorticotropic hormone)</li><li><a test="test" href="./003693.htm">Cortisol</a></li><li><a test="test" href="./003710.htm">FSH</a> (follicle-stimulating hormone)</li><li><a test="test" href="./003706.htm">Growth hormone</a></li><li>LH (<a test="test" href="./003708.htm">luteinizing hormone</a>)</li><li><a test="test" href="./003718.htm">Prolactin</a></li><li>
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TSH (<a test="test" href="./003684.htm">thyroid-stimulating hormone</a>)</li><li>Insulin-like growth factor-1 (IGF-1) </li><li>Sodium</li><li>Osmolarity in blood and urine </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Treatment</h2></div><div class="section-button"><button type="submit" aria-controls="section-4" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-4"><p>Acute apoplexy may require surgery to relieve pressure on the pituitary and improve vision symptoms. Severe cases need emergency surgery. If vision is not affected, surgery is often not necessary.</p><p>Immediate treatment with adrenal replacement hormones (glucocorticoids) may be needed. These hormones are often given through the vein (by IV). Other hormones may eventually be replaced, including:</p><ul><li>Growth hormone</li><li>Sex hormones (estrogen/testosterone)</li><li>Thyroid hormone</li><li>Vasopressin (ADH) </li></ul></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Outlook (Prognosis)</h2></div><div class="section-button"><button type="submit" aria-controls="section-5" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-5"><p>Acute pituitary apoplexy can be life threatening. The outlook is good for people who have long-term (chronic) pituitary deficiency that is diagnosed and treated.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Possible Complications</h2></div><div class="section-button"><button type="submit" aria-controls="section-6" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-6"><p>Complications of untreated pituitary apoplexy can include:</p><ul><li><a test="test" href="./000357.htm">Adrenal crisis</a> (condition that occurs when there is not enough cortisol, a hormone produced by the <a test="test" href="./002219.htm">adrenal glands</a>)</li><li>Vision loss </li></ul><p>If other missing hormones are not replaced, symptoms of <a test="test" href="./000353.htm">hypothyroidism</a> and <a test="test" href="./001195.htm">hypogonadism</a> may develop, including infertility.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>When to Contact a Medical Professional</h2></div><div class="section-button"><button type="submit" aria-controls="section-7" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-7"><p>Contact your provider if you have any symptoms of chronic pituitary insufficiency.</p><p>Go to the emergency room or call the local emergency number (such as 911) if you have symptoms of acute pituitary apoplexy, including:</p><ul><li>Eye muscle weakness or vision loss</li><li>Sudden, severe headache</li><li>Low blood pressure (which can cause fainting)</li><li>Nausea</li><li>Vomiting </li></ul><p>If you develop these symptoms and you have already been diagnosed with a pituitary tumor, seek medical help right away.</p></div></div></section><section><div class="section"><div class="section-header"><div class="section-title"><h2>Alternative Names</h2></div><div class="section-button"><button type="submit" aria-controls="section-Alt" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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</div></div><div class="section-body" id="section-Alt"><p>Pituitary infarction; Pituitary tumor apoplexy</p></div></div></section><section><div class="section sec-mb"><div class="section-header"><div class="section-title"><h2>Images</h2></div><div class="section-button"><button type="submit" aria-controls="section-tnails" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<li><img src="//medlineplus.gov/ency/images/ency/tnails/1093t.jpg" alt="Endocrine glands" title="Endocrine glands" class="side-img"/><a href="../imagepages/1093.htm">Endocrine glands</a></li>
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</div></div><div class="section-body" id="section-Ref"><p>Hannoush ZC, Weiss RE. Pituitary apoplexy. In: Feingold KR, Anawalt B, Boyce A, et al, eds. <em>Endotext [Internet]</em>. South Dartmouth, MA: MDText.com. 2000-. <a href="https://www.ncbi.nlm.nih.gov/books/NBK279125/" target="_blank">www.ncbi.nlm.nih.gov/books/NBK279125/</a>. Updated April 22, 2018. Accessed May 29, 2023.</p><p>Melmed S. Pituitary masses and tumors. In: Melmed S, Auchus, RJ, Goldfine AB, Koenig RJ, Rosen CJ, eds. <em>Williams Textbook of Endocrinology. </em>14th ed. Philadelphia, PA: Elsevier; 2020:chap 9.</p></div></div></section>
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<section><div class="section"><div class="section-header"><div class="section-title"><h2>Review Date 5/12/2023</h2></div><div class="section-button"><button type="submit" aria-controls="section-version" role="button" title="Expand/Collapse section"><span class="icon icon-section-action">
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<div id="section-version" class="section-body"><p>Updated by: Sandeep K. Dhaliwal, MD, board-certified in Diabetes, Endocrinology, and Metabolism, Springfield, VA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. Editorial update 02/05/2025. </p>
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