PCOS: changes to periods, skin and hair

Extra hair on your face and thinning hair on your scalp can occur with the same condition. PCOS can also bring acne and unpredictable periods. These changes can feel unrelated, but higher androgen activity can contribute to hair and skin symptoms and interfere with ovulation.

PCOS is now called polyendocrine metabolic ovarian syndrome, or PMOS. Both names refer to the same condition; this article uses PCOS to match the name you may already know.

When periods are hard to predict

PCOS can cause intermittent, absent or unpredictable periods. Some people have heavy or long periods instead. The pattern can change over time, so there is no single bleeding pattern that identifies PCOS. A clinician needs to consider other causes too.

Talk to your clinician about long gaps between periods, even if bleeding itself is not troubling you. Long-standing untreated absence of periods adds to the risk of thickening and cancer of the womb lining in PCOS. The overall chance of endometrial cancer remains low, and routine screening for everyone with PCOS is not recommended.

A clinician can discuss ways to regulate cycles and provide progestogen treatment to protect the lining. The NHS lists options including the combined pill, progestogen-only pill and hormonal intrauterine system, or IUS, for irregular periods. Which option fits depends on your health and preferences, including pregnancy plans.

Facial hair, acne and scalp thinning

Excess facial or body hair growth is called hirsutism. Acne and scalp hair thinning can also occur. However, the international guideline says acne or scalp hair loss on their own are relatively weak indicators of higher androgen levels. They cannot confirm PCOS on their own.

Tell the clinician if hair growth is new, severe or getting worse. The guideline recommends further investigation of that pattern to check for causes other than PCOS. A substantial new change needs assessment even if you already have a PCOS diagnosis.

If you remove unwanted hair, say so at the appointment. Hair removal can hide how much growth you experience, as the guideline recognises. Your account still matters, even if the clinician cannot see the full extent that day.

Choosing what you want treated

Removing hair is a personal choice. NHS options include shaving, waxing and hair-removal creams, as well as electrolysis or laser treatment. Prescription eflornithine cream can slow new hair growth; your GP or doctor can advise whether it is suitable for you.

For laser treatment, the guideline recommends an experienced, suitably qualified provider. Skin and hair colour affect the approach, and laser works less well on blond, grey or white hair. Ask about the likely benefit for your hair and skin before committing to treatment.

The combined pill may help irregular cycles, acne and excess hair growth. Anti-androgen medicines can be considered for some people when other approaches have not helped enough. Effective contraception is needed when pregnancy is possible because anti-androgens can harm fetal development. Discuss that requirement with your prescriber.

Acne treatments can include creams, gels or tablets, with the choice guided by severity. Some treatments, including retinoids, are unsuitable during pregnancy or when trying to conceive. Ask a pharmacist, GP or doctor about treatment before using it, and discuss pregnancy plans at the same time.

Evidence for treating scalp hair loss specifically in PCOS is limited. The guideline says anti-androgens with the combined pill can be considered, while acknowledging this uncertainty. Ask what improvement you can realistically expect and about the risks. Agree how the treatment will be reviewed.

When symptoms affect daily life

Contact your GP urgently today (UK), or your doctor or urgent care service (US or elsewhere), if thick, dark facial or body hair appears suddenly, or you develop an unexplained deeper voice or increased muscle bulk.

Book a GP appointment in the UK, or see your doctor in the US or elsewhere, if ongoing cycle, skin or hair changes are affecting daily life.

The emotional effect of visible symptoms matters regardless of how mild they look to someone else. WHO describes effects on body image, work and relationships, while the guideline asks clinicians to take the person’s own concerns seriously.

Choose a concrete example for the appointment: avoiding photographs, spending time removing hair, or changing plans around unpredictable bleeding. You can ask for a plan that addresses the symptom and its effect on you. Tell the clinician which concern you most want help with, even if they raise something else first.