clinical features of gastrointestinal allergy include diarrhea , vomiting , abdominal pain and colic , intestinal hemorrhage and malabsorption as well as symptoms and signs outside the gastrointestinal tract such as chronic rhinitis and asthma in the respiratory system , urticaria , angioedema and eczema as dermatological signs , headache , insomnia , hyperkinesis as central nervous system manifestations , failure to thrive and anaphylaxis as constitutional reactions .
C0004096
asthma
C0035237
respiratory