Three D's:
Drooling
Dysphagia
Distress
Pain with gentle palpation of larynx and upper trachea
Stridor
Respiratory distress
Often no cough seen or noted
Drooling
Dysphagia
Distress
Epiglottitis
Streptococcal pharyngitis 
Peritonsillar cellulitis
Neisseria gonorrhoeae
Nasal foreign body
Diphtheria 
Nasal polyp
Bacterial Tracheitis