06-08-2004, 05:08 PM
brian
A patient who has experienced recurrent urticaria comes to your office because the lesions have persisted for 48 hours. The patient has individual wheals that are smooth, edematous, and purpuric. They also itch and are painful.
Which one of the following is the most important diagnostic step at this time?
1 A skin biopsy
2 A trial of oral H1 antihistamines
3 A serum C4 complement level
4 A WBC count with differential
5 A placebo-controlled food additive challenge
A patient who has experienced recurrent urticaria comes to your office because the lesions have persisted for 48 hours. The patient has individual wheals that are smooth, edematous, and purpuric. They also itch and are painful.
Which one of the following is the most important diagnostic step at this time?
1 A skin biopsy
2 A trial of oral H1 antihistamines
3 A serum C4 complement level
4 A WBC count with differential
5 A placebo-controlled food additive challenge
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