A beta-lactam allergy triggered by penicillin. [ url:https://en.wikipedia.org/wiki/Side_effects_of_penicillin#Allergies_and_cross_sensitivities url:https://www.mayoclinic.org/diseases-conditions/penicillin-allergy/symptoms-causes/syc-20376222 http://purl.obolibrary.org/obo/ECO_0007637 http://purl.obolibrary.org/obo/ECO_0007638 ]