Understanding PMOS

Polyendocrine Metabolic Ovarian Syndrome (PMOS) is one of the most common hormonal conditions affecting girls and women of reproductive age. It can influence women's periods, hormones, metabolism, skin, hair, fertility, and overall well-being.

1 in 10

Women affected globally

70%

Remain undiagnosed

#1

Cause of infertility

Genetics

PMOS often runs in families. Having a close relative with PMOS increases the likelihood of having PMOS.

What causes PMOS?

There is no single known cause of PMOS. Researchers believe it develops from a mix of genetic, hormonal, and environmental factors (Important Note: PMOS is not caused by personal choices or anything a person did “wrong.”). 4 key contributing factors include:

Excess Androgen

High levels of androgen (male hormones that all women produce in smaller amounts) disrupts normal ovulation and can cause changes in skin & hair.

Insulin resistance

Many people with PMOS have cells that do not respond well to insulin. This leads the body to produce more insulin, which can further increase androgen levels.

Environmental Factors

Modern factors such as diet, stress, sleep patterns, and reduced physical activity may influence how PMOS develops or worsens.

Common Symptoms

Symptoms of PCOS can appear as early as the teenage years and often continue through a woman's reproductive life. Not everyone experiences the same symptoms, and severity varies widely. Some people have only mild symptoms, while others experience a more significant impact on daily life. Symptoms can also change over time.

Some common signs include:

Menstrual changes

Androgen-related changes

Periods that are irregular, infrequent (fewer than 8 per year), very heavy, painful, or completely absent.

Excess facial or body hair (hirsutism), persistent acne that is hard to treat, oily skin, or thinning hair on the scalp.

Metabolic effects

Fertility challenges

Difficulty losing weight or unexplained weight gain, especially around the midsection. Higher risk of insulin resistance, prediabetes, and type 2 diabetes over time.

Difficulty conceiving due to irregular or absent ovulation.

Skin changes

Darkened, velvety patches of skin (acanthosis nigricans), often on the neck, underarms, or groin.

Mental and emotional health

Higher rates of anxiety, depression, low mood, body image concerns, and reduced quality of life.

How is PCOS diagnosed?

The most widely used standard for PCOS is the Rotterdam criteria. A diagnosis can be made when at least two of the following three features are present:

Irregular Ovulation

High Androgen Levels

Ovarian Morphology

Shown through infrequent, unpredictable, or missing periods.

Either visible symptoms (excess hair, acne, thin hair) or elevated androgen levels (generally testosterone) seen through blood tests.

A high number of small immature follicles are identified on an ultrasound. Note: This is not required for diagnosis.

Doctors typically use:

Medical history & symptom observation

Hormone & blood sugar tests

Pelvic ultrasound (when appropriate)

The Social Side of PMOS

Besides from the physical symptoms, PMOS carries a significant social and emotional burden. Many women face long delays in diagnosis, repeated dismissal of their concerns, and a sense that their experiences are not taken seriously within the healthcare system.

Delayed diagnosis is very common:

Around one-third of women wait more than two years for a diagnosis.
Nearly half see three or more healthcare professionals before receiving answers.
In some studies, the average time from first seeking help to diagnosis is over four years.
Only about 15-35% of patients report being satisfied with the information they received at diagnosis.

Gender-based bias:

Many patients have described experiences with male doctors who appeared to view PMOS as a minor or non-serious “women’s issue.”
Many women report that their symptoms were minimized or attributed to stress, “normal” puberty, anxiety, or simply needing to lose weight. Doctors frequently focus on future fertility concerns or weight loss, while daily symptoms, such as irregular periods, skin problems, fatigue, or mental health, receive far less attention.
This pattern reflects a broader problem in women’s healthcare, where hormonal and reproductive conditions are more likely to be dismissed, under-prioritized, and hence under-researched.