Typically occurs within 1-2 weeks of exposure. May occur more quickly (several days) in previously sensitized patients
Morbilliform rashes sometimes resolve despite continued treatment. Coadministration of an antihistamine may limit symptoms and allow for continued treatment (i.e., a “treat-through” approach)
Morbilliform rashes generally DO NOT progress to more severe cutaenous manifestations
Clinical Phenotype:
Typically occurs > 72 hours after exposure (often weeks into therapy)
Clinical Phenotype:
Typically occurs within 1-3 weeks of exposure
Clinical Phenotype:
Typical Timing: