Which of the following is the mainstay therapy for otitis externa?

Which of the following is the mainstay therapy for otitis externa?

• A. Oral antibiotics
• B. Ototopical antibiotic/corticosteroid drops
• C. Systemic antifungals
• D. Topical benzocaine only

Answer: (B)

Topical antibiotic with corticosteroid drops are the mainstay therapy for otitis externa because they deliver high local concentrations of antibiotic directly to the inflamed external auditory canal while also reducing edema and pain with the corticosteroid. This approach targets the common pathogens in the canal, particularly Pseudomonas aeruginosa and Staphylococcus aureus, with minimal systemic exposure and fewer systemic side effects than oral antibiotics. Systemic antibiotics are reserved for more severe disease, spread beyond the canal, immunocompromised patients, or cases where ear drops cannot be used. A topical benzocaine-only preparation provides analgesia but does not treat the infection, and antifungals are used when a fungal infection is suspected rather than as routine systemic therapy.

Topical antibiotic with corticosteroid drops are the mainstay therapy for otitis externa because they deliver high local concentrations of antibiotic directly to the inflamed external auditory canal while also reducing edema and pain with the corticosteroid. This approach targets the common pathogens in the canal, particularly Pseudomonas aeruginosa and Staphylococcus aureus, with minimal systemic exposure and fewer systemic side effects than oral antibiotics. Systemic antibiotics are reserved for more severe disease, spread beyond the canal, immunocompromised patients, or cases where ear drops cannot be used. A topical benzocaine-only preparation provides analgesia but does not treat the infection, and antifungals are used when a fungal infection is suspected rather than as routine systemic therapy.