Sex and Gender Differences in Fibromuscular Dysplasia

Area of Science:

• Vascular Medicine
• Genetics
• Epidemiology

Background:

• Fibromuscular dysplasia (FMD) is an underrecognized non-atherosclerotic, non-inflammatory vascular disease.
• FMD disproportionately affects women and commonly impacts renal and extracranial carotid arteries.
• Potential complications include hypertension, dissection, and stroke, with sex-based differences in presentation.

Purpose of the Study:

• To summarize the current understanding of fibromuscular dysplasia.
• To highlight diagnostic considerations and management strategies for FMD.
• To underscore the need for further research into FMD pathophysiology and genetic underpinnings.

Main Methods:

• Review of existing literature on fibromuscular dysplasia.
• Analysis of clinical presentation and diagnostic modalities.
• Discussion of current treatment paradigms and preventative measures.

Main Results:

• FMD affects women more frequently than men.
• Commonly affects renal and extracranial carotid arteries, but can impact any vessel.
• Male patients show higher rates of arterial dissection and aneurysms.
• Diagnosis relies on clinical suspicion and imaging studies.
• Treatment involves monitoring and selective intervention, with antiplatelet therapy recommended.

Conclusions:

• Fibromuscular dysplasia requires a high index of suspicion for diagnosis.
• Management focuses on monitoring and antiplatelet therapy to prevent thrombotic events.
• Further research is needed to elucidate the genetic factors and mechanisms driving FMD, particularly its sex-based prevalence.