Vasculitis: Symptoms, Diagnosis and Treatment

Overview

Vasculitis is a group of rare autoimmune conditions characterized by inflammation of blood vessels. The inflammation can cause vessel walls to thicken, narrow, weaken, or burst, restricting blood flow to organs and tissues. There are many types of vasculitis, classified by the size of the blood vessels affected (large, medium, or small).

Common types include giant cell arteritis (large vessels), Kawasaki disease (medium vessels), and ANCA-associated vasculitis (small vessels). Some forms are limited to specific organs, while others are systemic. The condition can occur at any age and affects both men and women, though some types have age or sex predilections.

Vasculitis can be primary (occurring on its own) or secondary (resulting from another condition, such as an infection, medication, or other autoimmune disease). Early diagnosis is critical — untreated vasculitis can cause permanent organ damage or be life-threatening. Treatment typically involves immunosuppressive medications, and many forms are treatable and manageable.

Symptoms

Fever and fatigue
Weight loss
Muscle and joint pain
Nerve symptoms — numbness, tingling, or weakness
Skin rashes, purpura (purple spots), or ulcers
Abdominal pain after eating
Cough or shortness of breath
Vision changes or sudden vision loss (giant cell arteritis)
New or severe headaches (giant cell arteritis)
Jaw pain when chewing (giant cell arteritis)
Kidney problems — blood in urine
Numbness or weakness in limbs

Diagnosis

Blood tests — ANCA, ANA, complement levels, ESR, CRP, hepatitis screening
Imaging — CT, MRI, or PET scans to identify vessel inflammation and organ involvement
Biopsy — of affected tissue or vessel; the gold standard for diagnosis
Angiography — to visualize blood vessel narrowing or aneurysms
Urinalysis — to check for kidney involvement

A rheumatologist typically leads diagnosis, with other specialists depending on organ involvement.

Treatments

Corticosteroids — high-dose to rapidly control inflammation; often the first treatment
Immunosuppressive medications — cyclophosphamide, rituximab, azathioprine, mycophenolate, or methotrexate
Biologic agents — tocilizumab for giant cell arteritis, rituximab for ANCA-associated vasculitis
Plasma exchange — for severe cases with kidney or lung involvement
Maintenance therapy — lower-dose immunosuppression to prevent relapse after remission
Organ-specific treatment — depending on which organs are affected
Regular monitoring — blood tests, imaging, and organ function assessment
Vaccinations and infection prevention — due to immunosuppression

Medical Resources

Your Care Plan

A step-by-step guide to navigating your condition, from finding the right doctors to advocating for the care you deserve.

Step 1: Doctors to See

Start with: Your primary care physician for initial blood tests and referral.

Then seek: A rheumatologist who specializes in vasculitis.

Build your team:

Rheumatologist — for overall disease management
Nephrologist — if kidneys are affected
Pulmonologist — if lungs are involved
Neurologist — for nerve involvement
Ophthalmologist — for eye involvement
Dermatologist — for skin manifestations
Gastroenterologist — for GI involvement

Step 2: Advocate for Yourself

Vasculitis is rare and often misdiagnosed. If you have new, severe headaches with vision changes (especially if over age 50), this could be giant cell arteritis — seek emergency care, as untreated it can cause permanent blindness. If you have unexplained fevers, weight loss, skin rashes, and nerve symptoms, ask about vasculitis testing including ANCA antibodies. Don't let persistent symptoms be dismissed — vasculitis can cause irreversible organ damage if untreated.

Step 3: Your Action Plan

See your primary doctor for blood tests (ESR, CRP, ANCA, ANA).
Get a rheumatology referral — vasculitis requires specialist care.
If you have severe headaches and vision changes (age 50+), seek emergency evaluation for giant cell arteritis.
Expect a biopsy or angiography for definitive diagnosis.
Start treatment promptly — steroids and immunosuppressants are typically needed.
Attend all follow-up appointments for monitoring.
Discuss maintenance therapy to prevent relapses.
Report any new symptoms immediately — early treatment of relapses is critical.

Important: This report is educational information, not medical advice. Always consult a qualified healthcare professional for diagnosis and treatment decisions.