Which are the symptoms of Polyarteritis Nodosa?

Polyarteritis Nodosa (PAN) is a systemic necrotizing vasculitis that primarily affects medium-sized arteries, leading to diverse symptoms based on which organ systems are compromised. Common signs include unexplained fever, significant weight loss, severe muscle and joint pain, and characteristic skin lesions like nodules or livedo reticularis.

What are the primary symptoms of Polyarteritis Nodosa?

Because Polyarteritis Nodosa causes inflammation in blood vessels throughout the body, symptoms can appear in almost any organ system. Clinical presentation often begins with constitutional symptoms before localized organ involvement becomes apparent. Among the 57 members of our DiseaseMaps community living with Polyarteritis Nodosa, many report the following symptoms:

• Constitutional: Persistent fever, fatigue, and unintended weight loss.


• Musculoskeletal: Myalgia (muscle pain) and arthralgia (joint pain) that can be debilitating.


• Dermatological: Tender subcutaneous nodules, purpura (purple spots), and livedo reticularis (a net-like rash).


• Neurological: Mononeuritis multiplex, causing sudden weakness or numbness in the hands or feet.


• Renal/Gastrointestinal: Hypertension due to kidney involvement or severe abdominal pain caused by mesenteric artery inflammation.

How does Polyarteritis Nodosa affect quality of life?

The unpredictable nature of Polyarteritis Nodosa significantly impacts daily life, often due to chronic fatigue and the physical limitations imposed by nerve damage or joint pain. Patients frequently experience a "waxing and waning" course, where symptoms flare unexpectedly, requiring frequent adjustments to medication and lifestyle.

When should I seek immediate medical attention?

Prompt evaluation is critical if you experience "red flag" symptoms that suggest organ-threatening Polyarteritis Nodosa. Seek emergency care for severe, persistent abdominal pain (which may indicate bowel ischemia), sudden onset of foot drop or wrist drop, or a rapid rise in blood pressure. These signs often indicate that the vasculitis is actively damaging vital arteries.

How does the disease progress over time?

Without treatment, Polyarteritis Nodosa can progress rapidly, leading to organ failure. However, with modern immunosuppressive therapy, many patients achieve remission. Monitoring for changes—such as new skin lesions or worsening kidney function—is essential for long-term management.

Next steps

• Consult a rheumatologist or vasculitis specialist to discuss your specific symptom profile.


• Join the Polyarteritis Nodosa community on DiseaseMaps.org to connect with others sharing their experiences.


• Maintain a symptom diary to track flares, which helps your physician adjust your treatment plan effectively.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Polyarteritis Nodosa.


• Orphanet: Rare Disease Database - Polyarteritis Nodosa.


• Vasculitis Foundation: Patient resources and clinical guidelines.


• OMIM (Online Mendelian Inheritance in Man): Clinical features of systemic vasculitis.