Allergic rhinitis or hay fever:
stuffy or runny nose, itchy or watery eyes, and sneezing.

Bronchial asthma:
wheezing, shortness of breath, and coughing.

Hives/urticaria:
severe skin itching associated with welts.

Eczema/atopic dermatitis:
redness of the skin associated with some scaliness and itching.

Food allergy:
diarrhea, abdominal pain, and skin rashes.

Drug allergy.
 
Recurrent ear infections:
ear pain and hearing loss.

Sinusitis:
discolored nasal discharge associated with headaches.
Recurrent bronchitis/upper respiratory infections.

Immune dysfunction:
repeated infections.
Exercise-induced asthma.
Other allergic/immunologic disorders.