Severe and moderate presentations especially if symptoms did not respond promptly to epinephrine or required repeat dosing
Labs that may be requested by allergist/admitting team if uncertain diagnosis
Histamine level - serum elevation 30-60 min following<unk> , window easily missed
Tryptase - peaks at 2-4 hrs, remains elevated 6-12 hrs
Histamine level - serum elevation 30-60 min following<unk> , window easily missed
Tryptase - peaks at 2-4 hrs, remains elevated 6-12 hrs
Symptom-free for at least 4 hours and mild initial presentation
Send home with an epinephrine autoinjector! (Epi-Pen)
Up to 6% of the people with<unk>  have a repeat ED visit for<unk>  within 7 days
Anaphylaxis
Allergic reaction/urticaria
Heat tetany
Laryngospasm
Angioedema
Cold urticaria
Anxiety attack
Flash pulmonary edema