the sensitivity of the monospot for EBV is 85%. if you give ampicillin to a patient with EBV, >90% will get a maculopapular rash. this means that if a person has infectious mono, they are more likely to break out into a rash after receiving ampicillin than having a positive monospot test.
fyi: up to 80% of patients with CLL also break out into a rash after receiving ampicillin.
Is the ampicillin rash the new MonoSpot for EBV?
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I have had this rash for 2 weeks now. It is actually still getting worse. Any idea how long it might last? I am getting desperate.
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