“…Cross-reactivity between NSAIDs belonging in the same group and thus chemically related has been documented in the context of FDEs, as revealed by the search of the available published literature [ 12 , 13 , 14 , 15 , 16 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 ]. It should be noted that such reactions that are attributed to cross-reactivities between structurally related medications have been observed with the use of a variety of other agents including, but not limited to, quinolones, azoles, and antihistamines [ 4 , 42 , 43 , 44 , 45 ].…”