Inspiratory<unk> Suggestive of extrathoracic obstruction (Pressuretrach < Pressureatm)
Croup, metapneumovirus, foreign body, epiglottitis
Expiratory<unk> vs. wheezing
Suggestive of intrathoracic obstruction (Pressuretrach < Pressurepleura)
Asthma, bronchiolitis
Suggestive of extrathoracic obstruction (Pressuretrach < Pressureatm)
Croup, metapneumovirus, foreign body, epiglottitis
Suggestive of intrathoracic obstruction (Pressuretrach < Pressurepleura)
Asthma, bronchiolitis
Stridor 
Laryngotracheomalacia
Dysphagia
Accounts for 60%
Black hairy tongue
Usually exacerbated by viral URI
Paronychia
Dx w/ flexible fiberoptic laryngoscopy