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A flexural exanthem following postexposure prophylaxis.

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This summary is machine-generated.

A symmetrical drug rash occurred in a patient taking tenofovir and emtricitabine for HIV prevention. This rash appeared in skin folds after starting these antiretroviral medications.

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Area of Science:

  • Dermatology
  • Infectious Diseases
  • Pharmacology

Background:

  • Antiretroviral medications are crucial for preventing HIV transmission and managing the infection.
  • Nucleoside reverse transcriptase inhibitors (NRTIs) like tenofovir and emtricitabine are commonly prescribed for postexposure prophylaxis (PEP).
  • Drug-induced dermatological reactions are a known potential side effect of various medications, including antiretrovirals.

Observation:

  • A case of symmetrical drug-related intertriginous and flexural exanthema (SDRIFE) is presented.
  • The rash developed following the initiation of tenofovir and emtricitabine for antiretroviral postexposure prophylaxis.
  • The onset of the exanthema was temporally linked to the commencement of these NRTI medications.

Findings:

  • Tenofovir and emtricitabine, used in combination for HIV PEP, were identified as the likely causative agents for the SDRIFE.
  • The presentation was characterized by a symmetrical rash affecting intertriginous and flexural areas.
  • This case highlights a specific dermatological adverse reaction to a common antiretroviral regimen.

Implications:

  • Clinicians should be aware of SDRIFE as a potential adverse reaction to tenofovir and emtricitabine, particularly in the context of PEP.
  • Prompt recognition and diagnosis of drug-related rashes are essential for appropriate patient management and adherence to treatment.
  • Further investigation into the immunopathogenesis of SDRIFE related to NRTIs may inform safer antiretroviral prescribing practices.