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If skin testing was negative, an oral challenge with sulfamethoxazole and trimethoprim was performed
There are many causes of allergic reactions, meaning knowing the best treatments is not always easy
But "the right patient" is something a doctor determines through an actual relationship reviewing your labs, understanding your history, and following up over time not through a ten-question online form
In a 2025 animal mechanistic study, Lin H., et al
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