2. Itching

Itching is one of the most common immunological responses a person will have to an allergen. This is another reaction that will usually occur within 30 minutes of administration of the offending drug, and will often subside when a person stops taking the drug. Sometimes drug allergies can be challenging to diagnose because they mimic other conditions. An allergist may be able to determine better if a drug causes the skin reaction.

itching sulfa

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