on the basis of their history of reaction , the patients were categorized as follows : anaphylactoid reactions ( urticaria , angioedema , wheezing , or hypotension within 1 to 2 hours of exposure ) , possible anaphylactoid reactions ( tachycardia , dizziness , syncope , breathlessness , or pruritus occurring within 1 to 2 hours of exposure ) , contact dermatitis ( a typical eczematous skin eruption after appropriate cutaneous sensitization ) , and other reactions ( nonanaphylactoid reactions other than those already described or those occurring more than 2 hours after exposure ) .
C0042109
urticaria
C0002994
angioedema