PCOS Is Now PMOS: What the New Name Means for Women's Health

If you have been diagnosed with PCOS, you may start seeing a new name in your medical care and online searches: PMOS.

The name has changed, but the condition has not.

In 2026, Polycystic Ovary Syndrome (PCOS) was renamed Polyendocrine Metabolic Ovarian Syndrome (PMOS). The new name better explains what doctors have known for years: this condition involves much more than the ovaries.

PMOS can affect hormones, menstrual cycles, metabolism, skin, fertility, and long-term health.

The name change does not mean you have a new condition or that your previous diagnosis was wrong. Doctors will continue to diagnose and treat the same underlying health condition while the new terminology is gradually adopted.

At The Gabrielson Clinic for Women, we believe understanding your health is an important part of caring for it. Our women's healthcare team is here to help you understand changes in your menstrual cycle, hormones, fertility, and overall wellness at every stage of life.

Schedule an Appointment at The Gabrielson Clinic

What Does PMOS Stand For?

PMOS stands for Polyendocrine Metabolic Ovarian Syndrome. Each part of the name tells us something about the condition.

Polyendocrine means that more than one hormone or endocrine process can be involved.

Metabolic refers to processes such as insulin use, blood sugar, cholesterol, and how your body turns food into energy.

Ovarian recognizes that PMOS can affect ovulation and ovarian function.

Syndrome means that the condition can involve a group of symptoms that may look different from one woman to another.

Together, the new name gives a more complete picture of the condition.

Why Was PCOS Renamed PMOS?

The old name Polycystic Ovary Syndrome was often confusing because it placed too much focus on ovarian cysts. 

The word “polycystic” suggested that ovarian cysts were the main problem. In reality, women do not need to have ovarian cysts to be diagnosed with the condition.

The small structures sometimes seen on an ultrasound are generally follicles containing immature eggs, not the type of ovarian cyst that people often think of when they hear the word “cyst.”

More importantly, focusing on the ovaries did not show how much of the body can be affected.

A global group of patients, researchers, doctors, and health organizations worked together to choose a more accurate name. The final decision was published in The Lancet in May 2026.

The new name is meant to:

• Better describe the hormonal and metabolic parts of the condition
• Reduce confusion about ovarian cysts
• Help healthcare providers look beyond reproductive symptoms
• Encourage more complete, long-term care
• Reduce stigma and misunderstanding

The condition itself has not suddenly changed. Our understanding of it has grown.

PCOS vs. PMOS: What Changed?

If you already have a PCOS diagnosis, you do not need to be diagnosed again simply because the name changed.

What Is PMOS?

PMOS is a common hormonal and metabolic condition that can begin after puberty and affect women throughout different stages of life.

Two important parts of PMOS are often higher androgen levels and insulin resistance, although the condition can look different in each person.

Androgens are hormones such as testosterone. Women naturally have androgens, but higher levels can affect ovulation and contribute to symptoms such as acne, unwanted facial or body hair, and thinning hair on the scalp.

Insulin resistance means the body's cells do not respond to insulin as effectively as they should. The body may then make more insulin to keep blood sugar under control.

These hormonal and metabolic changes can affect each other and contribute to many of the symptoms associated with PMOS.

How Common Is PMOS?

PMOS is one of the most common hormonal conditions affecting women.

The international group behind the name change estimates that it affects about 1 in 8 women, or more than 170 million women worldwide.

Some women develop noticeable symptoms around puberty. Others may not be diagnosed until their 20s or 30s, especially if they begin having difficulty becoming pregnant.

Because symptoms can vary so much, PMOS can sometimes go unrecognized for years.

What Are the Symptoms of PMOS?

There is no single PMOS symptom that every woman experiences.

Common signs may include:

Some women have only a few mild symptoms. Others experience several symptoms that affect daily life.

You can also have PMOS at any body size. Weight alone cannot tell you if someone has the condition.

Why Does PMOS Cause Irregular Periods?

PMOS can interfere with ovulation, which is when an ovary releases an egg.

When ovulation does not happen regularly, periods may also become irregular.

A woman with PMOS might:

• Go several months without a period
• Have periods that arrive at unpredictable times
• Experience very heavy bleeding
• Have fewer periods throughout the year

Irregular periods can have many causes, so they do not automatically mean you have PMOS.

If your periods suddenly change, frequently occur far apart, or stop without an explanation, talk with your healthcare provider.

What Does Insulin Resistance Have to Do With PMOS?

Insulin is a hormone that helps move glucose, or sugar, from your bloodstream into your cells so they can use it for energy.

With insulin resistance, your cells do not respond to insulin as well as they should.

Your body may compensate by making more insulin.

Higher insulin levels can then affect other hormones, including androgens, which may interfere with normal ovulation and contribute to PMOS symptoms.

Insulin resistance can also increase the long-term risk of developing type 2 diabetes.

Not every woman with PMOS will have the same degree of insulin resistance, which is one reason care should be personalized.

Do You Have to Have Ovarian Cysts to Have PMOS?

No.

This is one of the most important reasons the condition was renamed.

Some women with PMOS have many small follicles visible on an ultrasound. These follicles contain immature eggs that have not fully developed or been released during ovulation.

They are not necessarily the same as the ovarian cysts that may grow, rupture, or cause pelvic pain.

You can also meet the criteria for PMOS without having this ovarian appearance at all.

That is why the old name could be confusing.

Why Can PMOS Be Difficult to Diagnose?

PMOS does not look the same in every woman.

One woman may have irregular periods and acne but no weight concerns.

Another may have regular-looking skin but struggle with insulin resistance or fertility.

Another may not realize she has PMOS until she tries to become pregnant.

Many symptoms can also have other causes.

That is why a complete medical history and evaluation are important. A diagnosis should not be based on one symptom or ultrasound alone.

Can PMOS Affect More Than Your Period?

Yes. One of the main reasons for the new name is to make it clearer that this is not only a reproductive condition.

PMOS may be associated with a higher risk of:

This does not mean every woman with PMOS will develop these conditions.

It does mean regular preventive healthcare is important, even during years when menstrual or fertility symptoms are not causing problems.

Can You Get Pregnant With PMOS?

Yes. PMOS can make pregnancy more difficult because ovulation may be irregular; however, pregnancy is still possible.

Some women conceive without treatment, while others may benefit from medication or fertility care to support ovulation. If pregnancy is part of your plans, talk with your women’s healthcare provider about the best approach for your symptoms and fertility goals.

Irregular periods do not prevent pregnancy, so contraception may still be needed if you do not want to become pregnant.

How Is PMOS Treated?

Treatment for PMOS depends on your symptoms, age, medical history, metabolic health, menstrual cycle, fertility goals, and other health conditions. Your care plan can also change over time as your health and needs change.  

Healthy Lifestyle Habits

Regular movement, nutritious foods, good sleep, and other healthy habits can support metabolic health and may help improve PMOS symptoms.

These recommendations should be personalized. PMOS can affect women of all sizes, and treatment should focus on health rather than blame.

Hormonal Birth Control

For women who are not trying to become pregnant, certain forms of hormonal birth control may help regulate menstrual bleeding.

Some types can also help improve acne or unwanted hair growth.

Medications for Insulin Resistance

Medications such as metformin may be recommended for some women to help the body respond more effectively to insulin.

Treatment for Acne or Unwanted Hair

Depending on your symptoms, your provider may recommend medications, dermatologic treatments, or cosmetic options.

Fertility Treatment

If PMOS is interfering with ovulation, medications can sometimes help encourage the ovaries to release an egg.

More advanced fertility care may be an option when needed.

Treatment should always be based on your individual health needs and discussed with your healthcare provider.

Does PMOS Go Away?

PMOS is considered a long-term health condition.

Symptoms may change throughout your life. For example, menstrual or fertility concerns may become less noticeable after the reproductive years, while metabolic health may become more important.

There is currently no single treatment that permanently removes PMOS.

The good news is that symptoms and health risks can often be managed with the right care.

That makes an ongoing relationship with your healthcare provider especially valuable.

Is PMOS Genetic?

Researchers are still studying exactly why PMOS develops.

Genetics appear to play a role, which means having a biological family member with PMOS may increase your chances of developing it.

Other factors, including insulin resistance and hormone regulation, are also involved.

PMOS is complex, and there is rarely one simple reason a woman develops it.

When Should You Talk With a Women's Healthcare Provider?

Consider scheduling an appointment if you experience:

• Periods that are regularly very far apart
• Several months without a period
• Unusually heavy or unpredictable bleeding
• New or severe acne
• Increased facial or body hair
• Unexplained scalp hair thinning
• Darkened patches of skin
• Difficulty becoming pregnant
• Other changes that make you concerned about your hormones

These symptoms do not always mean PMOS.

Your healthcare provider can help identify the cause of your symptoms and guide you on what to do next.

Understand Your Hormonal Health With The Gabrielson Clinic for Women

A new name can create new questions, especially when it involves a condition you may have lived with for years.

The most important thing to remember is that PMOS is manageable.

At The Gabrielson Clinic for Women, we provide personalized, compassionate healthcare for women across Iowa. Our team can help evaluate irregular periods, hormonal changes, fertility concerns, and other symptoms that may be connected to PMOS.

We believe women's healthcare starts with listening, education, and finding a care plan that fits your individual needs.

Have questions about your period, hormones, or PMOS? Let’s find answers together.

Schedule an Appointment at The Gabrielson Clinic