PCOS Renamed PMOS — What the New Name Means for Your Skin
One of the most common questions I hear in my consulting room is: “What is the root cause of my acne?” The honest answer is that it’s usually genetics — but hormones are often a significant contributor, particularly in women with persistent or treatment-resistant breakouts. And when hormones are involved, one condition comes up again and again: PCOS. Or rather, what we now need to start calling PMOS.
Polycystic ovary syndrome has been officially renamed. Published this month in The Lancet, a landmark global consensus involving over 14,000 patients and health professionals has given the condition a name that actually reflects what it is: polyendocrine metabolic ovarian syndrome, or PMOS. Affecting more than 170 million women worldwide — roughly 1 in 8 women of reproductive age — and with up to 70% of cases going undiagnosed, this renaming matters enormously.
And as a dermatologist who sees the skin fallout of this condition every single day, I could not be more pleased.
Why the Old Name Was Failing Patients
The term “polycystic ovary syndrome” implied that the problem was cysts on the ovaries. In reality, those aren’t pathological cysts at all — they’re small follicles that haven’t matured properly. More critically, the name completely erased the part of this condition that brings so many people through my door: the skin.
PMOS is fundamentally a polyendocrine disorder — meaning multiple hormonal systems are involved simultaneously. Yes, the ovaries play a role. But so do the adrenal glands, the insulin signalling pathways, the neuroendocrine system, and the androgen milieu that affects virtually every organ — including the skin.
Diagnostic Criteria for PMOS
Under the updated Rotterdam criteria, a PMOS diagnosis requires at least two of the following three features:
- Irregular or absent menstrual cycles
- Clinical or biochemical signs of elevated androgens (such as acne, hirsutism, or hair loss)Polycystic ovarian morphology on ultrasound
Crucially, two of these three criteria involve either the reproductive system or the skin. This is why so many PMOS diagnoses begin in a dermatologist’s chair, not a gynaecologist’s.
The Androgen–Skin Connection
Androgens — testosterone and its derivatives — are the link between the endocrine chaos of PMOS and what you see in the mirror. In PMOS, insulin resistance drives compensatory hyperinsulinaemia, which in turn amplifies androgen production from the ovaries and often the adrenal glands. Elevated androgens then act on the skin in three main ways.
Hormonal Acne
Androgens stimulate sebaceous gland activity, increasing sebum production and promoting the follicular environment where C. acnes thrives. This is why PMOS-related acne tends to follow a hormonal pattern — lower face, jawline, neck — and is notoriously resistant to topical treatments alone. If your acne hasn’t responded to standard skincare, it’s worth exploring whether PMOS is the underlying driver. You can read more about acne causes and treatments on our blog, and learn how Skindepth’s Acne Clinic takes a whole-patient approach.
Hirsutism (Unwanted Hair Growth)
Excess androgens convert fine vellus hairs to coarse terminal hairs in androgen-sensitive areas: the chin, upper lip, chest, and abdomen. It’s distressing, often stigmatised, and deeply underappreciated as a clinical sign. If you’re struggling with this, our article on unwanted chin hair and hormones explains the connection in detail.
Androgenic Hair Loss (Alopecia)
Paradoxically, while androgens grow hair where you don’t want it, they miniaturise follicles on the scalp — particularly at the frontal hairline and crown — in those with genetic susceptibility. This pattern of androgenic alopecia is a frequently overlooked sign of PMOS.
Treatment Options for PMOS-Related Skin Concerns
PMOS is a multisystem condition, and its treatment needs to be multidisciplinary. Here’s what current evidence supports for its skin manifestations:
Hormonal Therapies
For acne and hirsutism, spironolactone — an anti-androgen medication — is often highly effective, working by blocking androgen receptors at the level of the skin. Combined oral contraceptive pills with anti-androgenic progestins (such as Diane-35 or Yasmin) can also significantly reduce androgen-driven skin symptoms. These are prescription treatments; a consultation with a dermatologist or endocrinologist is needed to determine what’s right for you.
Laser Hair Reduction
For established hirsutism, medical-grade laser hair reduction remains the most effective long-term solution. At Skindepth, we use medical-grade laser technology to target hair follicles directly — though it’s important to note that hormonal management should run in parallel, as uncontrolled androgens will continue to stimulate new growth.
Addressing Hormonal Acne Topically and Systemically
Beyond hormonal therapy, a dermatologist-led approach to PMOS acne may include topical retinoids, azelaic acid, and antibiotics for acute flares. Diet also plays a role: insulin-spiking foods can worsen androgen activity, which is why a low-glycaemic approach is often recommended alongside medical treatment.
Hair Loss Treatments
For scalp alopecia, topical minoxidil remains a first-line option and can be effective in PMOS-related androgenic alopecia. In more significant cases, combination therapy with an anti-androgen and minoxidil may be recommended. Early intervention matters — the sooner hair follicle miniaturisation is addressed, the better the outcomes.
When to See a Dermatologist vs. an Endocrinologist
This is a question I’m asked often. As a general guide:
- See a dermatologist first if your primary concerns are skin-related: acne that isn’t responding to over-the-counter products, new or worsening hirsutism, or early-stage hair thinning.
- See an endocrinologist or gynaecologist if you’re experiencing menstrual irregularities, fertility concerns, or significant metabolic symptoms like weight changes or fatigue.
- Ideally, both: PMOS is a multisystem condition and a collaborative approach delivers the best outcomes.
At Skindepth, our Women’s Health service is designed specifically for conditions like PMOS, where hormonal and dermatological concerns intersect. We work with endocrinologists and GPs to ensure nothing falls through the cracks.
What This Name Change Means for My Patients
The new name matters because it shifts the conversation. It tells patients — and clinicians — that this isn’t just a gynaecological or reproductive problem. It’s endocrine. It’s metabolic. And yes, it shows up on your skin.
This is something I’ve been writing about for years — long before the official rename. If you’re new to the topic, our earlier piece on PCOS and the skin remains a useful primer.
And if you’re wondering how PMOS compares to other hormonal transitions, you might also find our article on perimenopause and skin health helpful — many of the same androgen-driven mechanisms are at play.
PMOS is a multisystem condition, and its treatment needs to be multidisciplinary. When I see skin signs of androgen excess, I’m not just treating the surface — I’m looking at the whole picture. Hormonal therapies, metabolic assessment, lifestyle interventions, and targeted skincare all have a role.
If you’re experiencing acne, hirsutism, or hair loss and haven’t been screened for PMOS, it’s worth a conversation. Book a consultation at Skindepth — your skin might be telling you something your hormones have been saying all along.