Polymyalgia rheumatica: 125 years of epidemiological progress?

Area of Science:

• Rheumatology
• Epidemiology
• Clinical Medicine

Background:

• Polymyalgia rheumatica (PMR) is a distinct clinical condition primarily affecting the elderly.
• Despite extensive research over 125 years, its exact epidemiological characteristics and aetiopathogenesis remain poorly understood.
• PMR is often considered separately from giant cell arteritis (GCA), with diagnosis relying heavily on clinical assessment.

Observation:

• Literature review indicates significant research into PMR's susceptible populations, geographic distribution, and potential sociological and genetic factors.
• Despite these efforts, PMR continues to pose challenges for public health services in developed nations.
• The relationship between PMR and GCA remains a subject of debate and lacks definitive clarification.

Findings:

• Epidemiological studies have identified susceptible populations and geographic patterns but have not elucidated the underlying causes of PMR.
• The diagnosis of PMR is predominantly based on clinical expertise, lacking objective diagnostic markers.
• A clear understanding of PMR's aetiology is still elusive, hindering the development of targeted treatments.

Implications:

• The lack of objective diagnostic criteria for PMR complicates management and research.
• Further research is needed to uncover the aetiology of PMR to develop effective interventions.
• Clear guidelines for managing PMR, particularly concerning long-term corticosteroid use, are difficult to establish without a better understanding of the disease.