Allergies can cause symptoms like itching in the throat and ears, occasional sore throat, nasal congestion, and sneezing. Trying an allergy medication like Reactine or Claritin can help improve these symptoms. Allergies to dust mites are common, so using a sinus rinse can also provide relief. Allergy symptoms from food typically occur within three hours of eating, but in children, they can be delayed and manifest as diarrhea, blood in stools, irritability, or skin rashes. It can be challenging to identify the specific food causing the allergy, so stopping the suspected food and consulting a doctor or allergist for testing may be necessary.