Living with polyarteritis nodosa awareness
Informed by recognized medical guidance
Overview
Polyarteritis nodosa (PAN) is a rare disease where the immune system mistakenly attacks small and medium-sized blood vessels. This attack causes swelling (inflammation) in the vessel walls, which can reduce blood flow and damage organs, skin, or nerves.
Key facts
- It is a type of vasculitis, meaning inflammation of blood vessels.
- It can affect many parts of the body, including the skin, joints, intestines, kidneys, and nerves.
- Early diagnosis and treatment can prevent serious organ damage.
- Treatment usually involves medicines that calm the immune system.
No, polyarteritis nodosa is very rare. Only a few people in every million are diagnosed each year, so most doctors may never see a case.
It can affect people of any age, but it is most often diagnosed in middle age, usually between 30 and 60 years old. Men are slightly more likely to get it than women.
Symptoms
- Sudden severe abdominal pain
- Chest pain or difficulty breathing
- Sudden weakness or numbness on one side of the body
- Seizures or loss of consciousness
- Coughing up or vomiting blood
- Severe bleeding
- ⚠High fever with severe headache
- ⚠New or worsening rash with pain
- ⚠Sudden vision changes
- ⚠Severe pain in a limb that looks pale or cold
Common symptoms
- Fever and feeling generally unwell
- Unintended weight loss
- Tiredness and fatigue
- Joint and muscle aches
- Skin rashes, including painful lumps or purple spots
- Abdominal pain after eating
- Numbness, tingling, or weakness in hands or feet
Symptoms in children
- Children may have the same symptoms as adults, including fever, rash, joint pain, and belly pain.
- Symptoms may be mistaken for other childhood illnesses, so a careful evaluation is needed.
Symptoms in older adults
- Older adults may experience fever, fatigue, and nerve pain, but symptoms can be less obvious.
- Confusion or memory changes can sometimes happen if the brain is affected.
Causes
Main causes
- The exact cause is unknown, but it seems to happen when the immune system attacks its own blood vessels.
- In some cases, hepatitis B or other infections may trigger the immune system to misfire.
- It is not contagious and not directly inherited from parents.
Risk factors
- Hepatitis B infection
- Middle age (30–60 years)
- Being male
- Possibly certain genetic backgrounds, though the evidence is not strong
When to see a doctor
See a doctor urgently if:
- Persistent high fever
- Unexplained weight loss
- Severe fatigue that doesn't improve
- New rash with pain or fever
- Numbness or weakness that is getting worse
Book a routine appointment if:
- You have any symptoms that last more than a few weeks and you're worried about them.
- You have been diagnosed and need regular follow-up.
Diagnosis
A doctor will take a detailed history, do a physical exam, and order several tests. Because PAN is rare, diagnosis often takes time and may involve a specialist such as a rheumatologist.
Tests that may be done
- Blood tests to check for inflammation and organ function
- A biopsy – taking a tiny sample of skin or an affected artery to look for inflammation
- Angiography – an imaging test that uses dye to see blood vessels and check for narrowed or bulging areas
- Urine tests to check kidney health
What to expect at your appointment
Your doctor may refer you to a team of specialists. You may need several appointments and tests before you get a clear diagnosis. It's important to share all your symptoms and ask questions each time.
Treatment
Treatment for PAN focuses on quickly reducing blood vessel inflammation, preventing organ damage, and managing symptoms. The right plan is individual and may change over time.
Self-care at home
- Take rest when you feel tired, and pace your activities.
- Protect your skin from cold and injury.
- Keep a diary of your symptoms to share with your care team.
- Ask for help with daily tasks when needed.
Medical treatments
Doctors usually prescribe medicines that calm the immune system, such as corticosteroids or other immunosuppressive drugs. These are started under specialist supervision. For some people, biological medicines that target specific immune cells may be used if standard treatments are not enough. Always follow your specialist's advice.
When is surgery considered?
Surgery is rarely needed for PAN, but it may be performed to repair a bulging vessel (aneurysm) or to treat a blocked artery that is causing serious problems.
Living with this condition
Living with PAN often means managing fatigue, staying on top of appointments, and learning your body's signals. Some days will be better than others. It helps to plan rest times and to talk openly with your healthcare team.
Lifestyle tips
- Avoid smoking and limit alcohol.
- Get enough sleep and rest.
- Keep a gentle routine to stay active without overdoing it.
- Stay warm, especially in cold weather, because some symptoms may get worse in the cold.
Diet and exercise
Aim for a balanced diet with plenty of fruits, vegetables, whole grains, and healthy proteins. Gentle exercises like walking, swimming, or stretching can improve strength and mood, but stop if you feel pain or excessive tiredness. Always talk to your doctor before starting a new exercise routine.
Mental health and emotional wellbeing
Living with a rare disease can be emotionally challenging. You may feel anxious, scared, or alone. These feelings are normal. Talking to a counselor, joining a support group, and staying connected with loved ones can help.
Prevention
Polyarteritis nodosa cannot be prevented because the exact trigger is unknown. However, reducing infections like hepatitis B may lower the risk. If you have hepatitis B, following your doctor's treatment plan is very important.
Vaccines
Keep your vaccinations up to date, including the hepatitis B vaccine if recommended for you. Talk to your doctor about which vaccines are safe for you, especially if you are taking medicines that weaken the immune system.
Screening programmes
If you have been diagnosed with PAN, your doctor will regularly check your blood pressure, kidney function, and other organs. This monitoring helps catch complications early.
Complications
If left untreated
- Kidney damage or failure
- Damage to nerves causing numbness or weakness
- Stroke or heart attack
- Bowel damage from poor blood flow
- Severe skin ulcers or gangrene
Long-term outlook
With early and proper treatment, many people with PAN improve significantly and can live full lives. The disease can be serious, but ongoing medical care, lifestyle adjustments, and a strong support network make a big difference. Remission, where symptoms disappear or greatly reduce, is possible.
Find support
International organisations
Local organisations
- Vasculitis UK ↗ · United Kingdom
External links open third-party websites. Ruqelo Health is not responsible for external content. Listing an organisation does not imply endorsement.
Always verify with your doctor
Health guidelines vary by country and region. The information in this article is based on international clinical guidelines but may not reflect the specific guidelines, medications, or practices in your country. Always discuss your health concerns with your own doctor or healthcare provider, and refer to your local national health guidelines where available.
Important notice This information is for educational purposes only. It does not replace professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider about your specific situation. If you are experiencing a medical emergency, call your local emergency services immediately.
Related conditions
Sources and guidance
This article is educational and is prepared with reference to recognized health information and clinical guidance sources where available. Specific source links may vary by topic.
Last updated: July 31, 2026
Educational note: This information is for education only and is not a diagnosis.
Use it to support, not replace, advice from a licensed clinician.
If symptoms are severe, worsening, or urgent, call your local emergency number or seek emergency care.