||Preauricular sinuses may occasionally track a considerable distance, ending blindly near the tympanic ring. Preauricular sinuses are usually asymptomatic; unless they become infected. Pain, tenderness, and swelling that points anterior to the auricle suggest an infected preauricular sinus. Non-spore-forming facultative anaerobes (e.g., Peptococcus, Peptostreptococcus, Bacteroides, and Fusobacterium) are the bacteria most commonly responsible for infection.
Definitive treatment requires complete excision of the sinus tract, and care must be taken in the removal of those tracts which extend deeply to avoid damage to the facial nerve.