Lupus vasculitis
Secondary vasculitis in SLE with poor prognosis if untreated.
Lupus vasculitis is a form of secondary vasculitis found in about half of people with systemic lupus erythematosus (SLE). It stems from an inflammatory process triggered when immune complexes build up inside blood vessel walls. The condition most often targets small vessels, though medium-sized ones can be affected; large vessel involvement is very rare. Because lupus vasculitis generally carries a poor outlook, catching it early is key to a good outcome.
The signs and symptoms vary widely based on which organs and what size of vessels are involved. The most common form is cutaneous vasculitis, which can show up as a range of skin issues: nodular lesions, redness on the back of the hand, discoid lesions on the fingertips, superficial ulcers, splinter hemorrhages, panniculitis, macules, necrotic erythema, erythematous plaques, skin infarction, livedo reticularis, bullous lesions on the limbs, urticaria, papulonodular lesions, petechiae, or palpable purpura. These usually involve small vessels, especially post-capillary venules. Less often, medium-vessel vasculitis appears as ischemic ulcers or subcutaneous nodules.
In the nervous system, peripheral involvement most commonly causes mononeuritis multiplex—an asymmetrical, progressive, asynchronous weakness, pain, and sensory loss affecting at least two distinct nerve areas, rather than a diffuse neuropathy. As it progresses, it can mimic a generalized polyneuropathy. A mild-to-moderate symmetric sensory polyneuropathy can also occur. Central nervous system vasculitis may bring seizure disorders, cerebrovascular disease, demyelinating syndrome, or cognitive dysfunction, which can appear together or separately over the course of the disease.
Gastrointestinal vasculitis, or lupus enteritis, is rare, affecting about 9.7% of SLE patients. Lupus mesenteric vasculitis is a common form and one of the most dangerous complications, with a 50% death rate when severe occlusive damage leads to bowel ischemia, necrosis, perforation, and bleeding. Key symptoms include acute abdominal pain, bloating, diarrhea, vomiting, nausea, hematemesis, and melena. In roughly 22.7% of cases, it also involves urinary symptoms like dysuria and lupus cystitis.
True renal vasculitis is the least common vascular injury in lupus nephritis, found in only 2.8%, 2.4%, and 0.6% of renal biopsies in different studies.
Quick Facts
- Specialty
- Rheumatology
Facts from the source article.
Lore & Background
Lupus vasculitis can affect multiple organ systems, with cutaneous vasculitis being the most common presentation. Skin lesions include superficial ulcerations, splinter hemorrhages, panniculitis, macules, erythema with necrosis, erythematous plaques, cutaneous infarction, livedo reticularis, bullous lesions, urticaria lesions, papulonodular lesions, petechiae, and palpable purpura. Most skin lesions involve small vessels, primarily post-capillary venules; less commonly, medium-vessel vasculitis manifests as ischemic ulcers or subcutaneous nodules.
Reader's Guide
Lupus vasculitis is significant as a serious complication of SLE that can range from mild cutaneous disease to life-threatening multiorgan involvement, including mesenteric vasculitis, pulmonary hemorrhage, and mononeuritis multiplex. Its prognosis is generally dismal, underscoring the need for early diagnosis. Treatment is guided by the severity of the condition and associated symptoms, with mild-to-moderate cases managed using oral corticosteroids and immunosuppressants such as mycophenolate mofetil, azathioprine, and methotrexate, while severe forms require more aggressive therapy. The condition highlights the complex interplay between autoimmune inflammation and vascular damage in SLE.
Did You Know?
- True renal vasculitis in lupus nephritis is rare, found in 0.6% to 2.8% of renal biopsies.
- Retinal vasculitis in SLE may present as asymptomatic or with painless blurred vision and permanent vision loss.
- Coronary vasculitis in SLE often appears without laboratory evidence of active SLE or clinical flare.
Frequently Asked Questions
Who is Lupus vasculitis?
Lupus vasculitis is a secondary vessel-inflammation condition that develops in roughly half of all individuals living with systemic lupus erythematosus. It is set in motion when immune-complex deposits accumulate within blood-vessel walls and provoke a sustained inflammatory attack.
What is Lupus vasculitis known for?
It primarily targets small blood vessels, occasionally reaches medium-sized ones, and very rarely involves large vessels. Its associated autoantibody toolkit includes anti-endothelial cell antibodies, ANCA, anti-phospholipid antibodies, and anti-dsDNA.
Why is Lupus vasculitis important?
Because it affects approximately 50 percent of the SLE population, it stands as one of the most consequential vascular complications of lupus. It is also notoriously hard to confirm in the central nervous system, where a brain biopsy—highly invasive and only moderately sensitive—remains the diagnostic gold standard.
What is Lupus vasculitis's most common form?
The cutaneous (skin) variant is the most frequently encountered presentation, though symptoms shift considerably depending on which organs and what size of vessels are involved.
More in Vasculitis 1-24
Spotted an error? Know more?
Reader corrections go straight into our review queue. Suggest an edit · How this site is sourced