Would you test/treat a middle aged adult male who was stung in his 30s and developed immediate lip swelling that resolved with antihistamines in 15 minutes?  

This is not a description of anaphylaxis and therefore does not require testing or VIT according to published Practice Parameters. Resolution was rapid and spontaneous (antihistamines don't work in under 15 minutes), also suggesting a very mild reaction. This was either a normal local reaction (if h...