Selvom den underliggende mekanisme ikke er identificeret, kan nogle af disse reaktioner være anafylaktoide/ anafylaktiske af natur, og kan omfatte symptomer som bronkospasme, urticaria, hypotension, bevidstløshed eller chok.
Although the underlying mechanism has not been identified, some of these reactions may be anaphylactoid/ anaphylactic in nature and may include symptoms such as bronchospasm, urticaria, hypotension, loss of consciousness or shock.