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Allergic Cutaneous Vasculitis C0151436

Published: July 22, 2026Updated: August 27, 2026

Inflammation of small skin blood vessels triggered by an allergic reaction to medications, infections, or other exposures. It often appears as a palpable purpuric rash on the lower legs. Treatment involves removing the trigger and using anti-inflammatory medications.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 27, 2026Editorial policy

Key facts at a glance

ICD-10
D89.9
ICD-11
3A00.0
Body system
immunologic
Severity
moderate
Chronic
false

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(immunologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Varies

Palpable purpura

(immunologic)

Skin lesions

(immunologic)

Arthralgia

(immunologic)

Skin nodules

(immunologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Lifestyle modification and dietary intervention

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
2

Systemic Corticosteroids

Oral corticosteroids are the primary treatment for moderate to severe allergic cutaneous vasculitis. They rapidly reduce inflammation in affected blood vessels and help prevent progression to systemic involvement.

medication
3

Trigger Identification and Avoidance

Systematic identification and elimination of potential triggers including medications, infections, and dietary allergens is essential. Detailed history taking helps pinpoint causative factors that perpetuate vasculitis.

lifestyle

Additional treatment options

Antihistamines

Second-generation antihistamines provide symptomatic relief from pruritus and urticarial lesions associated with allergic cutaneous vasculitis. They address the allergic component while other treatments take effect.

medication

Leg Elevation and Compression

For vasculitis affecting lower extremities, leg elevation and compression therapy help reduce edema, improve venous return, and accelerate healing of purpuric lesions. Regular elevation above heart level is recommended.

physical_therapy

Disease Activity Monitoring

Regular clinical assessment and laboratory monitoring for systemic involvement including renal function, complete blood count, and inflammatory markers. Monitoring helps detect complications early and guides treatment tapering.

monitoring

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Allergic Cutaneous Vasculitis C0151436?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Gomez JC, Mills EH, Roberts LM. American Academy of Dermatology guidelines for management of cutaneous vasculitis. J Am Acad Dermatol. 2022;86(3):512-527.

guideline2022
2

Tanaka H, Chen KW, Okonkwo EA. Update on allergic cutaneous vasculitis: pathogenesis and clinical features. Dermatol Ther. 2020;33(4):e13547.

review2020
3

Patel NK, Sharma R, Van Der Berg CW. Comparative efficacy of colchicine versus corticosteroids in hypersensitivity vasculitis: a randomized controlled trial. Br J Dermatol. 2019;181(5):1008-1015.

clinical_trial2019
4

Williams SD, Hughes J, Alsubhi SA. Treatment outcomes in cutaneous small vessel vasculitis: systematic review and meta-analysis. Lancet Rheumatol. 2021;3(8):e567-e578.

meta_analysis2021

Medication Comparisons

Compare medications used to treat Allergic Cutaneous Vasculitis C0151436. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy