Bluish coloration of the skin
Bloody, watery drainage from nose
Breathing problems, including difficulty breathing, fast breathing, high-pitched breathing sound (stridor)
Chills
Croup-like (barking) cough
Drooling (suggests airway blockage is about to occur)
Fever
Hoarseness
Painful swallowing
Skin sores (usually seen in tropical areas)
Sore throat (may range from mild to severe)