September 29, 2026

PCOS Has a New Name: What PMOS Means for the 1 in 8 Women Who Have It

September is awareness month for the condition now called polyendocrine metabolic ovarian syndrome. Here's what changed, and what didn't.

If you have spent late nights searching online for answers about missed periods, stubborn acne, or sudden weight gain, you are far from alone.

You may hear a new term at your next checkup: Polyendocrine Metabolic Ovarian Syndrome, or PMOS. It is the updated name for the condition long known as polycystic ovary syndrome, or PCOS. Doctors and researchers agreed on the new name earlier this year. Your testing and your care do not change. The name simply gives a clearer picture of what is happening in your body.

"The updated name better describes what we see clinically and physically, as this condition affects different endocrine systems even though it starts with the ovary," explains Sheila Chhutani, M.D., an OB/GYN on the medical staff at Texas Health Dallas, chair of the Department of Obstetrics and Gynecology, and executive medical director for Women and Infant Services at Texas Health. Dr. Chhutani is also a part of the Gynecological & Obstetrical Associates medical practice in Dallas, a member of Texas Health Physicians Group.

PMOS affects about 1 in 8 women of childbearing age. That makes it the most common hormone condition in this age group.

"More women are learning about it today through online videos on social media and health groups," Dr. Chhutani says. "Seeing and hearing other women talk about their health helps people notice the same signs in their own bodies and ask their doctors for help."

What the Name Means

Breaking the term into three parts helps explain how the condition works:

Polyendocrine: "Poly" means many. "Endocrine" refers to hormones. These are chemical messengers in your blood that control mood, growth, and energy. PMOS involves several hormones at once, including testosterone, insulin, and stress hormones.
Metabolic: This refers to metabolism. It is how your body turns food into energy and manages blood sugar.
Ovarian: This points to the ovaries. These are the organs that hold your eggs and make female hormones. PMOS changes ovulation and the timing of your cycle.

The old name focused only on cysts. The new name shows the bigger picture: weight, skin, hair, mood, blood sugar, and fertility.

What Happens Inside the Ovaries

On an ultrasound, the ovaries of a woman with PMOS often show many small, fluid-filled sacs called follicles. A follicle is a normal structure where an egg grows. These follicles are not cancer and are not harmful.

With PMOS, several follicles start to grow during a cycle, but no single egg fully matures and releases.

"In school, we learned of it like a string of pearls that you see, all of these cysts are like a string of pearls on the outside of the ovary," Dr. Chhutani describes. "And these little cysts are these follicles that produce estrogen. One of them should be a dominant follicle that you ovulate from. But then, because there's so many and you've got all this estrogen, a woman's entire cycle gets thrown off."

Signs to Watch For

PMOS looks different in every woman, so pay attention to the overall pattern rather than one symptom.

"The biggest thing is that it's not 'one size fits all,'" Dr. Chhutani says. "It's not that every person with this condition looks a certain way or fits a mold. I've had patients who are not overweight but still have insulin resistance and irregular cycles."

Signs to bring up with your doctor include:

Irregular Periods: Cycles more than 35 days apart, periods that stop for months, or fewer than eight periods a year when you are not on hormonal birth control.
Extra Hair or Acne: New hair growth on the face, chest, or belly, thinning hair on the scalp, or deep acne along the jawline.
Blood Sugar and Weight Changes: Weight that shifts without explanation, strong sugar cravings, or dark, velvety patches of skin on the neck or underarms.
Trouble Getting Pregnant: No pregnancy after 12 months of trying, or after six months if you are 35 or older.
Family History: A close relative with PMOS or type 2 diabetes.

What About Pelvic Pain?

Women often ask if belly pain is part of PMOS. Severe pelvic pain is not a standard symptom. When mild discomfort does show up, it usually ties back to your cycle:

Heavy Cramping: A longer gap between periods lets the lining of the uterus build up. When it finally sheds, the flow and the cramping can be heavier.
Bloating: Hormone shifts can cause your body to hold on to fluid, which brings a tight feeling in the lower belly.

When to seek care right away: Sudden, sharp, or severe pain on one side of the pelvis needs immediate medical attention. It can point to a twisted ovary, appendicitis, or endometriosis.

How Doctors Diagnose PMOS

There is no single test for PMOS. Your doctor puts together the whole picture.

"The principal way to diagnose it is going to be your history," Dr. Chhutani says. "We will learn your history as far as your cycles are concerned, look at your skin, obtain blood work so we can look at certain levels like your hormones and testosterone levels."

Doctors look for at least two of these three findings:

Irregular or Absent Ovulation: Periods that are infrequent, missing, or unpredictable.
High Androgen Levels: Blood work showing higher testosterone, or physical signs such as lasting acne and extra body hair.
Many Follicles or High AMH: An ultrasound showing the "string of pearls" pattern, or blood work showing a high level of anti-Müllerian hormone (AMH).

Your doctor will also rule out other causes. "I want to make sure that we're not missing thyroid disease or prolactin," Dr. Chhutani notes. "So some of it is ruling in, but some of what we do is ruling other things out."

One common worry: birth control pills do not cause PMOS. They can, however, mask or hide it. "Some women may have been living with PMOS for some time, and the birth control pills may have masked it,” Dr. Chhutani says.

Treating PMOS

PMOS is a long-term condition, and good treatment is widely available. "It is a long-lasting condition and there is not a cure for it," Dr. Chhutani explains. "We treat it."

Your plan depends on your symptoms, your health goals, and whether you want to get pregnant.

Medicines

Combination Hormonal Birth Control: Pills, patches, and rings steady your cycle, lower androgen levels, and clear up skin. "Birth control pills actually help with the acne and the extra hair growth," Dr. Chhutani shares. "So it's not just about having a period, but also helping with those other symptoms."
Progestin Therapy: Progestin pills or a hormonal IUD help the uterus shed its lining on a regular schedule.
Anti-Androgen Medicines: These block male hormones to reduce unwanted facial hair and hormonal acne.
Insulin-Sensitizing Medicines: There are prescriptions that help your body respond better to insulin, which is the hormone that controls blood sugar.

Getting Pregnant

Women with PMOS have healthy pregnancies all the time. Since the main hurdle is irregular ovulation, treatment focuses on helping you ovulate on a steady schedule.

"There is an older diabetes drug that can help women with PMOS ovulate regularly," Dr. Chhutani explains. Doctors may prescribe it alone or add another medicine that helps the body release an egg. If pills are not enough, a specialist can offer hormone shots or in vitro fertilization (IVF).

Blood sugar deserves close attention during pregnancy. "These women are at higher risk for diabetes in general, and especially for gestational diabetes," Dr. Chhutani says. "So she may get checked early in the pregnancy and again later on."

Daily Habits

Eat with Your Blood Sugar in Mind: Balanced meals that are low in added sugar help keep your levels steady. "We want women with PMOS to follow a diabetes-friendly eating plan, because they are already at higher risk for insulin resistance," Dr. Chhutani explains.
Be Patient with Your Body: "Some of the weight is not under their control. They are fighting an uphill battle against their own body and hormones," Dr. Chhutani says. "Watching their diet and exercising can still help."
Take Your Mental Health Seriously: "If your skin is irritated or you are struggling with your weight, that can definitely impact your emotional well-being," Dr. Chhutani notes. "It is so important that we pay attention to mental health and screen for depression."

Protecting Your Health Long Term

Treating PMOS now pays off for years to come.

Your Uterus: Regular shedding keeps the lining from building up under constant estrogen. "If nothing is happening and you don't have any progesterone to balance that out, then it can put a woman at increased risk for endometrial cancer," Dr. Chhutani explains. "I've seen a woman as young as 30 with endometrial cancer with PMOS because there was never any treatment."
Your Blood Sugar: Treating insulin resistance early lowers your risk of type 2 diabetes.
Your Heart: Managing blood sugar, blood pressure, and cholesterol protects your heart and liver.
Your Sleep: Your doctor may check for sleep apnea, which is more common with this condition.

Symptoms tied to your cycle fade at menopause. "When you go through menopause, your ovaries are no longer working," Dr. Chhutani says. "So then it's not a dysfunction; it's a non-function."

Find a Doctor Who Listens

Dr. Chhutani wants women to know that PMOS is not caused by anything they did, and that they do not have to manage it alone. "This is a long-term condition, so you need continued care," she says.

That care lasts for years, and so does the relationship with your doctor. What works in your twenties may need adjusting after pregnancy or in the years before menopause.

"We are here to listen and support our patients," she says. "We want to talk things through and work on this together."

Need an OB/GYN or specialist for you or your family? Call 1-877-THR-WELL or visit TexasHealth.org/doctors to find an OB/GYN nea