Immunoglobulin A vasculitis; Leukocytoclastic vasculitis; Henoch-Schönlein purpura; HSP
IgA vasculitis is a disease that involves purple spots on the skin, joint pain, gastrointestinal problems, and glomerulonephritis (a type of kidney disorder). It is also known as Henoch-Schönlein purpura (HSP).
IgA vasculitis is caused by an abnormal response of the immune system. The result is inflammation in the microscopic blood vessels in the skin. Blood vessels in the joints, kidneys, or the intestines may also be affected. It is unclear why this occurs.
The syndrome is mostly seen in children between ages 3 and 15 years, but it may be seen in adults. It is more common in boys than in girls. Many people who develop this disease had an upper respiratory infection in the weeks before.
Symptoms and features of IgA vasculitis may include:
The health care provider will look at your body and look at your skin. The physical exam will show skin sores (purpura, lesions) and joint tenderness.
Tests may include:
There is no specific treatment. Most cases go away on their own. Joint pain may improve with NSAIDs such as naproxen. If symptoms do not go away, you may be prescribed a corticosteroid medicine such as prednisone.
The disease most often gets better on its own. Two thirds of children with IgA vasculitis have only one episode. One third of children have more episodes. People should have close medical follow-up for 6 months after episodes to look for signs of kidney disease. Adults have a greater risk of developing chronic kidney disease.
Complications may include:
Call your provider if:
Arntfield RT, Hicks CM. Systemic lupus erythematosus and the vasculitides. In: Walls RM, Hockberger RS, Gausche-Hill M, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 9th ed. Philadelphia, PA: Elsevier; 2018:chap 108.
Dinulos JGH. Hypersensitivity syndromes and vasculitis. In: Habif TP, Dinulos JGH, Chapman MS, Zug KA, eds. Skin Disease: Diagnosis and Treatment. 4th ed. Philadelphia, PA: Elsevier; 2018:chap 11.
Feehally J, FLoege J. Immunoglobulin A nephropathy and IgA vasculitis (Henoch-Schönlein purpura). In: Feehally J, Floege J, Tonelli M, Johnson RJ, eds. Comprehensive Clinical Nephrology. 6th ed. Philadelphia, PA: Elsevier; 2019:chap 23.
Hahn D, Hodson EM, Willis NS, Craig JC. Interventions for preventing and treating kidney disease in Henoch-Schönlein purpura (HSP). Cochrane Database Syst Rev. 2015;(8):CD005128. PMID: 26258874 www.ncbi.nlm.nih.gov/pubmed/ 26258874.
Lu S, Liu D, Xiao J, et al. Comparison between adults and children with Henoch-Schönlein purpura nephritis. Pediatr Nephrol. 2015;30(5):791-796. PMID: 25481021 www.ncbi.nlm.nih.gov/pubmed/25481021.
Patterson JW. The vasculopathic reaction pattern. In: Patterson JW, ed. Weedon's Skin Pathology. 4th ed. Philadelphia, PA: Elsevier Churchill Livingstone; 2016:chap 8.
Sunderkötter CH, Zelger B, Chen KR, et al. Nomenclature of cutaneous vasculitis: Dermatologic addendum to the 2012 revised International Chapel Hill Consensus Conference Nomenclature of Vasculitides. Arthritis Rheumatol. 2018;70(2):171-184. PMID: 29136340 www.ncbi.nlm.nih.gov/pubmed/29136340.BACK TO TOP
Review Date: 4/8/2019
Reviewed By: Gordon A. Starkebaum, MD, MACR, ABIM Board Certified in Rheumatology, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2021 A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.