Fixed drug eruption from fluconazole

A fixed drug eruption is a medicine reaction that can produce a sharply defined red, dusky or swollen patch. It often returns at the same site when the triggering medicine is taken again, and the area may later leave darker pigmentation. The lips, mouth, genitals, hands and other skin sites can be involved. Fluconazole is one possible trigger, but a rash after taking it can have other explanations.

The timing of each dose, the first site, later sites and any accompanying symptoms help a clinician assess the pattern. Keep a record of the medicine name, dose timing and photographs if the rash changes.

Contact the prescriber or pharmacist promptly before taking another dose unless a healthcare professional has specifically told you to continue. Do not restart fluconazole as a self-test. Tell them about all medicines, supplements and previous reactions. Keep the area clean, avoid rubbing it and do not apply a new cosmetic product over the rash.

A clinician may recommend a topical corticosteroid for inflammation when appropriate. The suspected medicine and related drugs should be documented in your medical record so future prescribing can account for the reaction.

Seek urgent medical help for blistering or peeling skin, painful widespread redness, sores in the mouth or eyes, genital involvement, facial swelling, wheezing, faintness or trouble breathing. These features can signal a more serious medicine reaction and should not be managed with home treatment alone.

Does the timing and location fit a fixed drug eruption? Should fluconazole be recorded as a suspected allergy? What can I use for the inflamed patch, and which alternative treatment is appropriate for the original infection?