Key points
- Argas reflexus bites may explain cases of nocturnal
anaphylaxis, otherwise generally diagnosed as idiopathic anaphylaxis.
- Currently, sIgE to Argas reflexus can be determined with
ImmunoCAP and ALEX2.
- Delayed IgE-mediated anaphylaxis to mammalian meat caused by α-Gal can
be diagnosed with the ImmunoCAP.
- Cross-reactivity between fire ant venom and scorpion has been
described.
- Rarely, immunologic reactions following spider bites are reported such
as AGEP, erythema multiforme, and DRESS.