Hypersensitivity Vasculitis Medication
- Author: Jeffrey P Callen, MD; Chief Editor: William D James, MD more...
Medication Summary
No established, effective therapy is available for all patients. Few of the therapies have been tested in controlled trials.
Anti-inflammatories
Class Summary
These agents decrease inflammatory responses and systemically interfere with events leading to inflammation.
Colchicine
Has effects against neutrophils, which are probably involved in expression of cutaneous vasculitis; has been demonstrated to be steroid-sparing in open-label studies. The only double-blinded placebo-controlled trial failed to demonstrate its efficacy; however, several methodological errors occurred in this study. Not FDA approved in children.
Dapsone (Avlosulfon)
Small open-label studies or single case reports have suggested that dapsone is effective in some patients with cutaneous vasculitis. Used in hypersensitivity vasculitis not for its antimicrobial activity but for its modulatory effect on neutrophil activity.
Corticosteroids
Class Summary
These agents have anti-inflammatory properties and cause profound and varied metabolic effects. In addition, these agents modify the body's immune response to diverse stimuli.
Prednisone (Deltasone)
Indicated for vasculitis affecting internal organs (eg, kidneys, lungs, CNS). Patients whose skin involvement results in ulceration may require corticosteroid therapy.
Cytotoxic/immunosuppressives
Class Summary
These agents inhibit cell growth and proliferation. Note the clinical guideline summary, Guidelines for prescribing azathioprine in dermatology.
Cyclophosphamide (Cytoxan, Neosar)
Useful in life-threatening cases of vasculitis. Patients with only skin disease generally should not be treated with this agent. Useful in patients with polyarteritis nodosa, Wegener granulomatosis, and Churg-Strauss syndrome. Agent is an alkylating agent that depresses T- and B-cell function.
Azathioprine (Imuran)
Antagonizes purine metabolism and inhibits synthesis of DNA, RNA, and proteins. May decrease proliferation of immune cells, which results in lower autoimmune activity.
Methotrexate (Folex, Rheumatrex)
Unknown mechanism of action in treatment of inflammatory reactions; may affect immune function. Ameliorates symptoms of inflammation (eg, pain, swelling, stiffness).
Adjust dose gradually to attain satisfactory response.
Rituximab (Rituxan)
Genetically engineered human monoclonal antibody directed against the CD20 antigen found on the surface of normal and malignant B lymphocytes.
Immunomodulates response against malignant cells.
Mycophenolate (CellCept)
Inhibits inosine monophosphate dehydrogenase (IMPDH) and suppresses de novo purine synthesis by lymphocytes, thereby inhibiting their proliferation. Inhibits antibody production.
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