Allergies Flashcards
1
Q
What is the cut off time for drug timeline in SCAR (severe cutaneous adverse reaction)?
A
8 weeks! Any drug pt has been on for 8 weeks or longer cannot be the culprit
2
Q
What should you refer SCAR patients for?
A
Skin testing (some time after the acute incident has resolved)
3
Q
Cause of erythema multi forms?
A
Never a drug
Causes by infection or other
Look hard for HSV
4
Q
What are the most common drugs causing SCAR?
A
Vanc, piptaz and Bactrim
5
Q
Acute renal failure, fever and urinary eosinophils after a drug?
A
AIN!
6
Q
Acute Cross reactivity rate between cephalosporins and penicillins
A
<2%
Does not apply to delayed reactions eg DRESS
