Short-Term Oral Corticosteroid Use Tied to Higher Risks of GI Bleeds, Sepsis, Heart Failure

Posted on August 8, 2020 by MaryO

Study Authors: Tsung-Chieh Yao, Ya-Wen Huang, et al.; Beth I. Wallace, Akbar K. Waljee

Target Audience and Goal Statement: Primary care physicians, rheumatologists, pulmonologists, dermatologists, gastroenterologists, cardiologists

The goal of this study was to examine the associations between oral corticosteroid bursts and severe adverse events among adults in Taiwan.

Question Addressed:

  • What were the associations between steroid bursts and severe adverse events, specifically gastrointestinal (GI) bleeding, sepsis, and heart failure?

Study Synopsis and Perspective:

It has long been known that long-term use of corticosteroids can be both effective and toxic. Long-term use is associated with adverse effects such as infections, GI bleeding/ulcers, cardiovascular disease (CVD), Cushing syndrome, diabetes and metabolic syndromes, cataracts, glaucoma, and osteoporosis. Most clinical practice guidelines caution against long-term steroid use unless medically necessary.

Action Points

  • In a retrospective cohort study and self-controlled case series, prescriptions for oral steroid bursts were found to be associated with increased risks for gastrointestinal bleeding, sepsis, and heart failure within the first month after initiation, despite a median exposure of just 3 days.
  • Note that the risks were highest 5 to 30 days after exposure, and attenuated during the subsequent 31 to 90 days.

Instead, clinical practice guidelines recommend steroid bursts for inflammatory ailments such as asthma, inflammatory bowel disease, and rheumatoid arthritis. Waljee and colleagues noted in 2017 that they are most commonly used for upper respiratory infections, suggesting that many people are receiving steroids in the real world.

In a retrospective cohort study and self-controlled case series, prescriptions for oral steroid bursts — defined as short courses of oral corticosteroids for 14 or fewer days — were found to be associated with increased risks for GI bleeding, sepsis, and heart failure within the first month after initiation, despite a median exposure of just 3 days, according to Tsung-Chieh Yao, MD, PhD, of Chang Gung Memorial Hospital in Taoyuan, and colleagues.

The risks were highest 5 to 30 days after exposure, and attenuated during the subsequent 31 to 90 days, they reported in Annals of Internal Medicine.

The self-controlled case series was based on national medical claims records. Included were adults, ages 20-64, covered by Taiwan’s National Health Insurance in 2013-2015.

Out of a population of more than 15.8 million, study authors identified 2,623,327 people who received a steroid burst during the study period. These individuals were age 38 on average, and 55.3% were women. About 85% had no baseline comorbid conditions.

The most common indications for the steroid burst were skin disorders and respiratory tract infections.

The incidence rates among patients prescribed steroid bursts were 27.1 per 1,000 person-years for GI bleeding (incidence rate ratio [IRR] 1.80, 95% CI 1.75-1.84), 1.5 per 1,000 person-years for sepsis (IRR 1.99, 95% CI 1.70-2.32), and 1.3 per 1,000 person-years for heart failure (IRR 2.37, 95% CI 2.13-2.63).

Absolute risk elevations were similar in patients with and without comorbid conditions, meaning that the potential for harm was not limited to those at high risk for these adverse events.

The study authors acknowledged that they could not adjust for disease severity and major lifestyle factors such as alcohol use, smoking, and body mass index; because these factors were static, the effect could be eliminated using the self-controlled case series design. Their reliance on prescription data also meant they could not tell if patients actually complied with oral corticosteroid therapy. Furthermore, the exclusion of the elderly and younger populations also left room for underestimation of the risks of steroid bursts, they said.

Source References: Annals of Internal Medicine 2020; DOI: 10.7326/M20-0432

Editorial: Annals of Internal Medicine 2020; DOI: 10.7326/M20-4234

Study Highlights and Explanation of Findings:

Over the 3-year study period, steroid bursts were commonly prescribed to adults. Such prescriptions were written for common conditions, including skin disorders and upper respiratory tract infections. The highest risks for GI bleeding, sepsis, and heart failure occurred within the first month after receipt of the steroid burst, and this risk was attenuated during the subsequent 31 to 90 days.

“Our findings are important for physicians and guideline developers because short-term use of oral corticosteroids is common and the real-world safety of this approach remains unclear,” the researchers wrote. Notably, one corticosteroid that fits the bill is dexamethasone — a medication that holds promise for the treatment of critically ill COVID-19 patients, although it is not generally prescribed orally for these patients.

Based on preliminary results, the NIH’s COVID-19 treatment guidelines panel recommended the use of “dexamethasone (at a dose of 6 mg per day for up to 10 days) in patients with COVID-19 who are mechanically ventilated and in patients with COVID-19 who require supplemental oxygen but who are not mechanically ventilated.” In addition, they recommend “against using dexamethasone in patients with COVID-19 who do not require supplemental oxygen.”

“We are now learning that bursts as short as 3 days may increase risk for serious AEs [adverse events], even in young and healthy people. As providers, we must reflect on how and why we prescribe corticosteroids to develop strategies that prevent avoidable harms,” wrote Beth Wallace, MD, and Akbar Waljee, MD, both of the VA Ann Arbor Healthcare System and Michigan Medicine.

On the basis of the reported risk differences in the study, Wallace and Waljee calculated that one million patients exposed to corticosteroid bursts experienced 41,200 GI bleeding events, 400 cases of sepsis, and 4,000 cases of new heart failure per year that were directly attributed to this brief treatment.

“Although many providers already avoid corticosteroids in elderly patients and those with comorbid conditions, prescribing short bursts to ‘low-risk’ patients has generally been viewed as innocuous, even in cases where the benefit is unclear. However, Yao and colleagues provide evidence that this practice may risk serious harm, making it difficult to justify in cases where corticosteroid use lacks evidence of meaningful benefit,” they wrote in an accompanying editorial.

“Medication-related risks for AEs can, of course, be outweighed by major treatment benefit. However, this study and prior work show that corticosteroid bursts are frequently prescribed for self-limited conditions, where evidence of benefit is lacking,” Wallace and Waljee noted.

“As we reflect on how to respond to these findings, it is useful to note the many parallels between use of corticosteroid bursts and that of other short-term medications, such as antibiotics and opiates. All of these treatments have well-defined indications but can cause net harm when used — as they frequently are — when evidence of benefit is low,” they emphasized.

Last Updated August 07, 2020
Reviewed by Dori F. Zaleznik, MD Associate Clinical Professor of Medicine (Retired), Harvard Medical School, Boston

Primary Source

Annals of Internal Medicine

Source Reference: Yao TC, et al “Association between oral corticosteroid bursts and severe adverse events: a nationwide population-based cohort study” Ann Intern Med 2020; DOI: 10.7326/M20-0432.

Secondary Source

Annals of Internal Medicine

Source Reference: Wallace BI, Waljee AK “Burst case scenario: why shorter may not be any better when it comes to corticosteroids” Ann Intern Med 2020; DOI: 10.7326/M20-4234.

Additional Source

MedPage Today

Source Reference: Lou N “Sobering Data on Risks of Short-Term Oral Corticosteroids” 2020.

From https://www.medpagetoday.org/primarycare/generalprimarycare/87959?xid=nl_mpt_DHE_2020-08-08&eun=g1406328d0r&utm_term=NL_Daily_DHE_dual-gmail-definition&vpass=1

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Steroid Medication for Nasal Obstruction in Infants May Cause Cushing’s Syndrome

Posted on March 10, 2018 by MaryO

Intranasal steroid drops used to treat nasal obstruction may cause Cushing’s syndrome and adrenal insufficiency in infants, a case study of two patients suggests.

The study, “Iatrogenic Cushing’s syndrome and adrenal insufficiency in infants on intranasal dexamethasone drops for nasal obstruction – Case series and literature review,” was published in the International Journal of Pediatric Otorhinolaryngology.

Children with nasal obstruction may have severe delays in development and can face life-threatening complications later in life such as obstructive sleep apnea and cardiopulmonary problems.

While intranasal steroid drops have become increasingly popular as a substitute for surgery, they can have adverse effects. In addition to suppressing the immune system and changing metabolism, high levels of corticosteroids in the blood may cause Cushing’s syndrome.

Researchers at Weill Cornell Medical College presented two cases of adrenal gland insufficiency and Cushing’s syndrome caused by intranasal dexamethasone drops. Dexamethasone is a type of corticosteroid medication.

First, they described the case of a 3-month-old boy who was taken to the hospital following a life-threatening episode at home after feeding. A physical evaluation revealed nasal congestion with no additional anatomic abnormalities.

Treatment with nasal dexamethasone drops three times a day improved his breathing. While the dosage was later decreased to three drops once daily, a congestion episode led the mother to increase the dose back to the initial recommendation.

After seven weeks of treatment, the boy was noted to have facial puffiness, leading to an endocrine evaluation that revealed low cortisol levels. The dose was eventually reduced, and the boy’s cortisol levels returned to normal after several months.

The second case was a 6-week-old boy with a history of chronic congestion and difficulty feeding. He had severe nasal obstruction and required intubation due to respiratory distress. A nasal exam revealed damaged mucosa with severe nasal cavity narrowing, and he began treatment with three ciprofloxacin-dexamethasone drops three times a day.

After two and a half weeks of treatment, the boy’s cortisol levels were considerably low, and adrenal insufficiency was diagnosed. The treatment dose was reduced in an attempt to improve cortisol levels, but nasal obstruction symptoms continued.

The child then underwent surgery to resolve his nasal obstruction, and the treatment with steroid drops was discontinued. While his cortisol levels subsequently improved, they continued to be low, suggesting that he may have a hormone-related disease.

Despite the benefits of steroid-based nasal drops, small infants are more sensitive to steroid compounds. In addition, nasal drops are more easily absorbed than nasal sprays, suggesting that infants taking these medications should be better controlled for side effects.

“Patients started on this therapy must be closely monitored in a multi-disciplinary fashion to ensure patient safety and optimal symptom resolution,” the researchers suggested.

From https://cushingsdiseasenews.com/2018/03/09/cushing-syndrome-infants-can-be-caused-by-steroid-based-nasal-drops-study-suggests/

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History of Cortisone’s Discovery

Posted on April 4, 2017 by MaryO

It was Christmas Day in 1914 when the Mayo Clinic chemist Edward C. Kendall, PhD, first succeeded in isolating pure crystalline thyroxin using 6,500 pounds of hog thyroid glands, a success that would set him on the course for making one of the greatest discoveries in medicine in the last century.

His pivotal discovery, according to William F. Young, Jr., MD, MSc, chair of the division of endocrinology, diabetes, metabolism and nutrition at the Mayo Clinic College of Medicine, would lead Kendall, a self-described “hormone hunter,” to conduct adrenal experiments that would eventually change the course of medicine in ways he couldn’t have imagined. Kendall and his team’s discovery of cortisone would lead not only to a breakthrough treatment, Young said, but a Nobel Prize and international acclaim.

In an interview prior to presenting the Clark T. Swain Memorial History of Endocrinology Lecture at ENDO 2017, Young said that understanding the history behind such a monumental discovery can help endocrinologists see how hormone research has evolved, and provides insight into how to make advances in basic science and improve patient care. In preparing to tell Kendall’s story, Young completed archival research at Mayo and uncovered information that has not previously been published, he said.

“The cortisone story originated at Mayo Clinic, where I have been on staff for 33 years,” Young told Endocrine Today. “Although much of this story is not new information, it is not familiar to the current generations of endocrine scientists and clinical endocrinologists. It is a story of discovery science, clinical intuition, persistence, team science, patient volunteerism and sacrifice, hopes, and dreams.”

‘A big oak tree’

When Kendall first took on the project of preparing better adrenal extracts to potentially treat Addison’s disease in 1930, he was already thinking bigger, Young said.

“He once said, ‘I want to grow a great big oak tree … I am not interested in a bunch of blackberry bushes,’” Young said.

During his experiments at Mayo Clinic, the cost of bovine adrenals rose from 0.20 cents a pound to $3 per pound, equivalent to $42 per pound today. In 1934, Kendall struck a deal with Parke Davis Co., were he would extract “adrenalin” at no cost for the company if it would, in turn, deliver to him 600 pounds of bovine adrenals each week, Young said. He would then use the adrenal cortex for his studies.

In addition, Kendall struck a side deal with Wilson Labs, Young said, for an additional 300 pounds of bovine adrenals per week, to produce a cortical extract for them. He would in turn use the adrenal medullas to boost his production of adrenalin for the Park Davis deal.

“From 1934 to 1949, virtually all of the adrenaline used in North America was manufactured at Mayo Clinic in the small town of in Rochester, Minnesota,” Young said. “This lab ran 24 hours a day, in three shifts. By 1949, over 150 tons of adrenal glands had been processed at Mayo Clinic … $12.4 million in research supply dollars.”

A new discovery

In 1934, Kendall recognized through his work that the adrenal cortex produced more than one hormone, Young said. Over the next year, Kendall’s group isolated five crystalline compounds, naming them compounds “A” through “E” based on their order of identification. Compound “E” — what would later be named cortisone — was found to be biologically active, Young said.

Interest in synthesizing the active hormone from the adrenal cortex grew as part of the American war effort in the 1940s, Young said, and the U.S. National Research Council made it a priority. By 1948, 9,000 mg of “compound E” had been synthesized for clinical study; 2,000 mg were given to each of three investigators at Mayo Clinic for studies in patients with Addison’s disease and the remaining 3,000 mg were saved for future study.

In 1948, a patient known as H.G., a 28-year-old women with progressive inflammatory arthritis, presented to the clinic, Young said. After an unsuccessful treatment with the Swedish hepatoxin lactophenin — a therapy used at the time that induced jaundice in some patients, leading to remission — her physician, Philip Hench, went to Kendall for help. Kendall agreed to give Hench some of the remaining 3,000 mg of “compound E,” if Hench could convince Merck to grant permission.

The clinicians did get permission, and H.G. began treatment. Within days, Young said, the improvement was remarkable. Reading from the original, handwritten notes of Hench and his colleagues in rheumatology, , Young detailed the patient’s progress:

“Rolled over and turned off the radio with ease for the first time in weeks,” the notes said from “day 3.” “No more trembling of knees when moving.”

The clinicians were so amazed, Young said, that they filmed H.G’s progress. Young, who obtained the original films from the Mayo Clinic archives, showed footage of a crippled H.G. struggling to stand, only to be walking normally.

“They started taking videos because they realized no one would believe them,” Young said as the video played. “That they actually had something that could affect, up until this point, a crippling disorder.”

Hench came up with the acronym “cortisone,” adapted from corticosterone.

The discovery became international news. In December 1950, Kendall, Hench along with Tadeus Reichstein, received the 1950 Nobel Prize in Physiology and Medicine — just 27 months after H.G. received her first dose of “compound E.”

The future of corticosteroids

Today, Young said, corticosteroids are used for their anti-inflammatory and immunosuppressive properties across the field of medicine. Natural and synthetic glucocorticoids are used to treat a wide variety of non-adrenal diseases, from allergies, to gastrointestinal disorders and infectious diseases.

The important story of patient H.G. — and the scientific journey of Kendall and his colleagues — still resonates, Young said.

“My hope is that this story will remind us of our endocrine heritage and give us an opportunity to recognize the unlimited potential for discovery, research and clinical investigation that is taking place in research laboratories and clinical endocrine centers across the globe,” Young said in an interview. “In the current environment in the U.S., where federal research funds are being cut back, it is important to recall where the major advances in research and public health have come from.”

“There are many other messages in the presentation,” Young said. “For example, the importance of ‘team science’— a phrase only recently coined — has been in place for decades. It is team science that has led to many of the major advances in medicine, including the therapeutic use of corticosteroids.” – by Regina Schaffer

Reference:

Young WF. A Chemist, a Patient and the 1950 Nobel Prize in Physiology and Medicine: The Stories Behind the Stories on Cortisone. Presented at: The Endocrine Society Annual Meeting; April 1-4, 2017; Orlando, Fla.

Disclosures: Young reports no relevant financial disclosures.

 

From http://www.healio.com/endocrinology/adrenal/news/online/%7Bd8d71bcc-a981-418e-9d41-af4b2dcaa48f%7D/history-of-cortisones-discovery-offers-lessons-in-team-science-persistence

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Cushing’s Syndrome Treatments

Posted on January 1, 2017 by MaryO
Medications, Surgery, and Other Treatments for Cushing’s Syndrome

Written by | Reviewed by Daniel J. Toft MD, PhD

Treatment for Cushing’s syndrome depends on what symptoms you’re experiencing as well as the cause of Cushing’s syndrome.

Cushing’s syndrome is caused by an over-exposure to the hormone cortisol. This excessive hormone exposure can come from a tumor that’s over-producing either cortisol or adrenocorticotropic hormone (ACTH—which stimulates the body to make cortisol). It can also come from taking too many corticosteroid medications over a long period of time; corticosteroids mimic the effect of cortisol in the body.

The goal of treatment is to address the over-exposure. This article walks you through the most common treatments for Cushing’s syndrome.

Gradually decreasing corticosteroid medications: If your doctor has identified that the cause of your Cushing’s syndrome is corticosteroid medications, you may be able to manage your Cushing’s syndrome symptoms by reducing the overall amount of corticosteroids you take.

It’s common for some people with certain health conditions—such as arthritis and asthma—to take corticosteroids to help them manage their symptoms. In these cases, your doctor can prescribe non-corticosteroid medications, which will allow you to reduce—or eliminate—your use of corticosteroids.

It’s important to note that you shouldn’t stop taking corticosteroid medications on your own—suddenly stopping these medications could lead to a drop in cortisol levels—and you need a healthy amount of cortisol. When cortisol levels get too low, it can cause a variety of symptoms, such as muscle weakness, fatigue, weight loss, and low blood pressure, which may be life-threatening.

Instead, your doctor will gradually reduce your dose of corticosteroids to allow your body to resume normal production of cortisol.

If for some reason you cannot stop taking corticosteroids, your doctor will monitor your condition very carefully, frequently checking to make sure your blood glucose levels as well as your bone mass levels are normal. Elevated blood glucose levels and low bone density are signs of Cushing’s syndrome.

Surgery to remove a tumor: If it’s a tumor causing Cushing’s syndrome, your doctor may recommend surgery to remove the tumor. The 2 types of tumors that can cause Cushing’s are pituitary tumors (also called pituitary adenomas) and adrenal tumors. However, other tumors in the body (eg, in the lungs or pancreas) can cause Cushing’s syndrome, too.

Pituitary adenomas are benign (non-cancerous), and most adrenal tumors are as well. However, in rare cases, adrenal tumors can be malignant (cancerous). These tumors are called adrenocortical carcinomas, and it’s important to treat them right away.

Surgery for removing a pituitary tumor is a delicate process. It’s typically performed through the nostril, and your surgeon will use tiny specialized tools. The success, or cure, rate of this procedure is more than 80% when performed by a surgeon with extensive experience. If surgery fails or only produces a temporary cure, surgery can be repeated, often with good results.

If you have surgery to remove an adrenal tumor or tumor in your lungs or pancreas, your surgeon will typically remove it through a standard open surgery (through an incision in your stomach or back) or minimally invasive surgery in which small incisions are made and tiny tools are used.

In some cases of adrenal tumors, surgical removal of the adrenal glands may be necessary.

Radiation therapy for tumors: Sometimes your surgeon can’t remove the entire tumor. If that happens, he or she may recommend radiation therapy—a type of treatment that uses high-energy radiation to shrink tumors and/or destroy cancer cells.

Radiation therapy may also be prescribed if you’re not a candidate for surgery due to various reasons, such as location or size of the tumor. Radiation therapy for Cushing’s syndrome is typically given in small doses over a period of 6 weeks or by a technique called stereotactic radiosurgery or gamma-knife radiation.

Stereotactic radiosurgery is a more precise form of radiation. It targets the tumor without damaging healthy tissue.

With gamma-knife radiation, a large dose of radiation is sent to the tumor, and radiation exposure to the healthy surrounding tissues is minimized. Usually one treatment is needed with this type of radiation.

Medications for Cushing’s syndrome: If surgery and/or radiation aren’t effective, medications can be used to regulate cortisol production in the body. However, for people who have severe Cushing’s syndrome symptoms, sometimes medications are used before surgery and radiation treatment. This can help control excessive cortisol production and reduce risks during surgery.

Examples of medications your doctor may prescribe for Cushing’s syndrome are: aminoglutethimide (eg, Cytadren), ketoconazole (eg, Nizoral), metyrapone (eg, Metopirone), and mitotane (eg, Lysodren). Your doctor will let you know what medication—or combination of medications—is right for you.

You may also need to take medication after surgery to remove a pituitary tumor or adrenal tumor. Your doctor will most likely prescribe a cortisol replacement medication. This medication helps provide the proper amount of cortisol in your body. An example of this type of medication is hydrocortisone (a synthetic form of cortisol).

Experiencing the full effects of the medication can take up to a year or longer. But in most cases and under your doctor’s careful supervision, you can slowly reduce your use of cortisol replacement medications because your body will be able to produce normal cortisol levels again on its own. However, in some cases, people who have surgery to remove a tumor that causes Cushing’s syndrome won’t regain normal adrenal function, and they’ll typically need lifelong replacement therapy.2

Treating Cushing’s Syndrome Conclusion
You may need one treatment or a combination of these treatments to effectively treat your Cushing’s syndrome. Your doctor will let you know what treatments for Cushing’s syndrome you’ll need.

From https://www.endocrineweb.com/conditions/cushings-syndrome/cushings-syndrome-treatments

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Causes of Cushing’s Syndrome

Posted on October 2, 2016 by MaryO

Cushing’s syndrome—also referred to as hypercortisolism—is fairly rare. However, researchers have boiled down a few key causes of Cushing’s syndrome, which you’ll read about below.

The cause of Cushing’s syndrome boils down to: Your body is exposed to too much cortisol. There are a few ways that this over-exposure can happen, including taking certain medications and having a tumor on your pituitary gland or adrenal gland.

Can Taking Corticosteroids Cause Cushing’s Disease?
One particular type of medication can cause Cushing’s syndrome: corticosteroids. But rest assured: Not all steroid medications cause Cushing’s syndrome. It’s more common to develop Cushing’s syndrome from steroids you take in pill form or steroids you inject. Steroid creams and steroids you inhale are not common causes of Cushing’s syndrome.

Some steroid medications have the same effect as the hormone cortisol does when produced in your body. But as with an excessive production of cortisol in your body, taking too much corticosteroid medications can, over time, lead to Cushing’s syndrome.

It’s common for people with asthma, rheumatoid arthritis, and lupus to take corticosteroids. Prednisone (eg, Deltasone) is an example of a corticosteroid medication.

Other Cushing’s Disease Causes
Your body can over-produce cortisol or adrenocorticotropic hormone (ACTH). The pituitary gland secretes ACTH, which is in charge of stimulating the adrenal glands to produce cortisol, and the adrenal glands are responsible for releasing cortisol into the bloodstream.

Cortisol performs important tasks in your body, such as helping to maintain blood pressure and regulate how your body metabolizes proteins, fats, and carbohydrates, so it’s necessary for your body to maintain normal levels of it.

The following can cause excessive production of cortisol or ACTH, leading to Cushing’s syndrome.

  • Pituitary gland tumors: A benign (non-cancerous) tumor of the pituitary gland can secrete an excess amount of ACTH, which can cause Cushing’s syndrome. Also known as pituitary adenomas, benign tumors of the pituitary gland affect women 5 times more often than men.
  • Adrenal gland tumors: A tumor in one of your adrenal glands can lead to Cushing’s syndrome by causing too much cortisol to enter your bloodstream. Most of these tumors are non-cancerous (called adrenal adenomas).

    Cancerous adrenal tumors—called adrenocortical carcinomas—are relatively rare. These types of tumors typically cause extremely high levels of cortisol and very rapid development of symptoms.

  • Other tumors in the body: Certain tumors that develop outside the pituitary gland can also produce ACTH. When this happens, it’s known as ectopic ACTH syndrome. Ectopic means that something is in an abnormal place or position. In this case, only the pituitary gland should produce ACTH, so if there is a tumor producing ACTH and it isn’t located on the pituitary, it’s ectopic.

    It’s unusual to have a tumor that secretes ACTH outside the pituitary. These tumors are usually found in the pancreas, lungs, or thyroid, and they can be benign or malignant (cancerous).

    The most common forms of ACTH-producing tumors are small cell lung cancer, which accounts for about 13% of all lung cancer cases, and carcinoid tumors—small, slow-growing tumors that arise from hormone-producing cells in various parts of the body.

  • Familial Cushing’s syndrome: Although it’s rare, Cushing’s syndrome can develop from an inherited tendency to have tumors on one or more of your endocrine glands. Some inherited conditions, such as multiple endocrine neoplasia (MEN 1), can involve tumors that over-produce cortisol or ACTH, leading to Cushing’s syndrome.

If you think you could have Cushing’s syndrome or you have questions about the causes of Cushing’s syndrome, talk to your doctor immediately.

Written by | Reviewed by Daniel J. Toft MD, PhD, adapted from  http://www.endocrineweb.com/conditions/cushings-syndrome/cushings-syndrome-causes

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