Abstract
Rationale:Thromboangiitis obliterans (TAOs, or Buerger's disease) present as a non-atherosclerotic segmental occlusive vasculitis within medium- and small-sized blood vessels. TAO frequently occurs in young adults and is associated with cigarette smoking. At present, there are no accurately defined treatments for TAO.Patient concerns:A 34-year-old Asian woman with a 20-year history of heavy cigarette smoking and recurrent, small, and self-limited lower limb ulcerations since adolescence, presented with persisting unhealed ulcerations on both ankles for 6 months. Her wound healing response was poor following the 2-month administration of colchicine, prednisolone, hydroxychloroquine, and mycophenolic acid.Diagnosis:The patient was diagnosed with TAO with hyperimmunoglobulin E and refractory ulcerations on her ankles.Interventions:The patient received monthly omalizumab (300 mg) and previous medications for 2 months and shifted to omalizumab and colchicine without mycophenolic acid and hydroxychloroquine because of onychomadesis, which was considered to be a possible adverse drug reaction.Outcomes:The wounds healed almost completely. The administration of omalizumab and colchicine will be continued until they the wounds are fully healed.Lessons:Mycophenolic acid has a limited function in TAO treatment, especially in cases of refractory skin ulcerations. Omalizumab can be a valuable treatment option for patients with TAO and hyperimmunoglobulin E.
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