Symptoms

PMOS symptoms: the full list

Irregular periods are the symptom that gets noticed. They are rarely the only one, and often not the most consequential.

Written by the Lila team · Sources linked below · 2 min read · Updated

Most people arrive at PMOS through their periods. Irregular cycles are the symptom that finally sends someone to a doctor, so they become the headline, and everything else gets treated as unrelated bad luck.

That framing is exactly what the 2026 renaming was meant to correct. Polyendocrine metabolic ovarian syndrome involves several hormone systems at once, and its symptoms are correspondingly scattered across the body.

Cycle and reproductive

  • Irregular, infrequent, or absent periods
  • Very heavy or unpredictable bleeding when periods do arrive
  • Difficulty conceiving, or a longer time to conceive

Signs of raised androgens

  • Acne, particularly along the jaw and chin, and often past the teenage years
  • Coarse hair growth on the face, chest, or abdomen
  • Thinning hair at the scalp or a receding hairline

Metabolic

  • Insulin resistance, sometimes long before blood sugar looks abnormal
  • Raised long-term risk of type 2 diabetes
  • Changes in cholesterol and cardiovascular risk
  • Weight that shifts easily upward and stubbornly downward

The ones nobody warns you about

The 2023 international guideline explicitly strengthened recognition of features that used to be treated as side notes: a very high prevalence of psychological symptoms, sleep apnoea, and fatigue. Anxiety and depression are markedly more common in this population, and they are part of the condition rather than a personal failure to cope with it.

You don't need all of these to have PMOS. Two people with the same diagnosis can look almost nothing alike.

Some people have dramatic cycle disruption and little else. Others have mostly metabolic and skin symptoms with fairly regular periods. Both are the same condition presenting differently, which is a large part of why diagnosis takes so long.

If several of these look familiar, the most useful thing you can do before an appointment is write them down as they happen, over months, not from memory. Scattered symptoms are easy to dismiss one at a time. The same symptoms, dated and grouped on a page, are a pattern, and a pattern is what a clinician can actually work with.

That's the whole reason we're building Lila.

Why we built Lila

Your symptoms, gathered into something a doctor can read.

Lila is a companion for living with PMOS. It takes a minute a day and turns months of scattered symptoms into one clear page.

  • Log symptoms, cycles, and energy in under a minute
  • See which of them tend to travel together, in your own data, not a population average
  • Walk into an appointment with a record instead of a memory
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Lila is in development. No spam, and nothing shared. It records and reflects, it never diagnoses.

Lila is a companion and a record, not a doctor. This article is general information, not advice about your situation. If any of this sounds familiar, please speak to a clinician.

Quick answers

What are the symptoms of PMOS?

Common symptoms include irregular, infrequent or absent periods; acne, coarse hair growth on the face, chest or abdomen, and thinning scalp hair; insulin resistance and a raised long-term risk of type 2 diabetes; and anxiety, depression, sleep apnoea and fatigue.

Can you have PMOS and still have regular periods?

Yes. Some people have mostly metabolic and skin symptoms with fairly regular periods, while others have dramatic cycle disruption and little else. Both are the same condition presenting differently.

Are anxiety and depression part of PMOS?

Anxiety and depression are markedly more common in people with PMOS, and the 2023 international guideline strengthened recognition of this. They are part of the condition, not a personal failure to cope.

What should I do before seeing a doctor about possible PMOS?

Write your symptoms down as they happen, over several months, rather than relying on memory. Dated and grouped, scattered symptoms become a pattern a clinician can work with.

Sources