DRESS onset

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Multiple Choice

DRESS onset

Explanation:
DRESS typically begins after a latent period rather than immediately. The skin reaction with fever, facial swelling, and a widespread eruption usually shows up about one to six weeks after starting the offending drug. This delay reflects a sensitization-driven immune process and helps distinguish DRESS from immediate hypersensitivity reactions, which occur within minutes to hours, and from eruptions that appear much later after drug exposure. Eosinophilia and possible involvement of organs such as the liver may accompany the rash, so recognizing this weeks-long window prompts prompt drug cessation and workup. While there can be variability, the most common timeframe is within the first six weeks of therapy.

DRESS typically begins after a latent period rather than immediately. The skin reaction with fever, facial swelling, and a widespread eruption usually shows up about one to six weeks after starting the offending drug. This delay reflects a sensitization-driven immune process and helps distinguish DRESS from immediate hypersensitivity reactions, which occur within minutes to hours, and from eruptions that appear much later after drug exposure. Eosinophilia and possible involvement of organs such as the liver may accompany the rash, so recognizing this weeks-long window prompts prompt drug cessation and workup. While there can be variability, the most common timeframe is within the first six weeks of therapy.

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