From PCOS to PMOS: what a long-overdue renaming tells us about the future of community health
The decision to rename polycystic ovary syndrome (PCOS) as polyendocrine metabolic ovarian syndrome (PMOS) has been discussed largely as a question of terminology. The change, published in the Lancet in May following a fourteen-year international process, was a formal acknowledgement that the old name had actively misdirected care and failed to reflect the complex and multisystem nature of the condition. More broadly, the transition reflects a growing gap between medicine’s understanding of chronic conditions as interconnected and long-term, and healthcare systems still organised around separate services and short-term interventions.
For many people living with PMOS, care can involve moving between primary care, fertility services, endocrinology, dermatology and mental health support, with no single pathway fully reflecting how the condition affects their lives over time. An APPG report published in September 2025 found that patients were routinely bounced between services without a clear or coordinated plan, and that most integrated care boards, when asked, cited generic gynaecological services as the only support available for the condition. Research into PCOS care in UK general practice found that fewer than one in five women with a diagnosis could recall any discussion of the condition’s long-term health risks, despite these being formally recognised features of the syndrome. International survey data has found that more than a third of patients experienced a diagnostic delay of over two years, with nearly half consulting three or more health professionals before reaching a diagnosis. The name did not simply describe a fragmented system. It helped produce one.
PMOS is far from the only condition that does not fit neatly within a single service, specialty or pathway. Healthcare systems are increasingly managing conditions that are interconnected, shaped by multiple factors and closely linked to wider patterns of chronic illness. Conditions associated with PMOS, including type 2 diabetes, cardiovascular disease and poor mental health, are themselves among the major long-term pressures reshaping healthcare systems internationally. Yet services are still organised around separate clinical pathways and short-term interventions, making continuity of care difficult in practice.
The NHS 10-Year Health Plan’s neighbourhood health service is a direct response to this kind of structural failure, convening professionals around patients rather than routing patients between institutions, and shifting from activity-based to outcomes-based commissioning. The ambition is to build care that can respond to conditions as people actually experience them, rather than as the boundaries of separate services define them.
At the Health Equality Foundation, we recognise that this shift is also essential to addressing the health inequalities that fragmented systems entrench. Navigating multiple disconnected services requires time, confidence and the ability to repeatedly advocate for yourself across different parts of the healthcare system. People in the most deprived communities are significantly more likely to experience multiple long-term conditions, and can expect to live almost two decades more in ill health than those in the least deprived areas. Healthcare systems built around fragmented pathways therefore tend to fail most where the need for continuity, prevention and long-term support is greatest.
Delivering on the community health shift requires more than structural reorganisation. It requires neighbourhood services genuinely equipped to manage complexity: earlier access to diagnostics, including blood testing and ultrasound, more joined-up referral pathways, and stronger coordination between primary, specialist and preventative care.
The women carrying the greatest burden of conditions like PMOS are often those who have faced the longest waits, the most fragmented pathways and the greatest barriers to having symptoms taken seriously. A community health shift that does not actively reach these groups will not close existing gaps in care. It will reproduce them in new settings.
The PMOS transition will not by itself resolve fragmented services or unequal access to care. But it does underline what community health reform must deliver: neighbourhood services equipped to manage the full complexity of long-term conditions, particularly for the communities carrying the greatest burden of ill health. Whether those reforms reduce inequalities or reproduce them will depend on the choices made in implementing them.