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Allergic contact dermatitis from ketoconazole.

Jing Liu1, Erin M Warshaw

  • 1Department of Dermatology, University of Minnesota, 4-240, Phillips-Wangensteen Bldg, 516 Delaware St SE, Minneapolis, MN 55455, USA. Liux0524@umn.edu.

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This summary is machine-generated.

True contact allergy to ketoconazole is rare but can cause severe dermatitis. This case highlights a patient with ketoconazole allergy, emphasizing the need for careful diagnosis in recurrent skin conditions.

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Area of Science:

  • Dermatology
  • Allergology
  • Pharmacology

Background:

  • Ketoconazole is a common imidazole antifungal.
  • True contact allergy to topical ketoconazole is infrequently reported.
  • Recurrent dermatitis can have various underlying causes.

Observation:

  • A patient presented with facial swelling and itching after using ketoconazole for seborrheic dermatitis.
  • Previous dermatitis episodes were suspected to be linked to ketoconazole exposure.
  • Patch testing confirmed a specific allergy to ketoconazole.

Findings:

  • The patient exhibited a true contact allergy to ketoconazole.
  • No cross-reactivity was observed with four other imidazole antifungal agents.
  • Discontinuation of ketoconazole led to the resolution of the patient's dermatitis.

Implications:

  • This case underscores the importance of considering ketoconazole allergy in patients with unexplained or recurrent dermatitis.
  • Accurate diagnosis through patch testing is crucial for identifying specific triggers.
  • Avoiding the identified allergen can effectively manage ketoconazole-induced contact dermatitis.