| • | must always ask “urticaria or urticarial” |
| • | drug (always check meds) |
| • | hepatitis B,C,D (hep A,E associated with exanthems), mono, CVD, parasitic infection, hypothyroid |
bullets:
urticaria vs. urticarial LCV vs. neutrophils vs. eos vs. mast cells
| acute urticaria | immunologic IgE: food (esp. in children; < 6 mos 7.5% = cows milk), meds, latex |
vs. non-immunologic (meds, radiocontrast, scombroid)
| chronic urticaria | infection (H. pylori, dental/sinus, parasite, hepatitis) vs. physical urticaria vs. autoimmune (FcεRIα; check thyroid Ab’s) |
|