In the management of otitis externa, which treatment is most appropriate to start?

In the management of otitis externa, which treatment is most appropriate to start?

• A. Systemic antibiotics
• B. Topical antibiotic ear drops
• C. Oral antihistamines
• D. Intravenous fluids

Answer: (B)

Otitis externa is an infection confined to the external ear canal, so the treatment goal is to deliver antibiotic directly to the site of infection. Topical antibiotic ear drops achieve high concentrations right at the affected area, effectively treating the localized infection with minimal systemic exposure. This makes them the best initial choice for uncomplicated cases, often with added anti-inflammatory drops to reduce swelling and itching and help the canal stay clear for drainage. If the canal is very swollen or blocked, a wick may be used so the drops can reach all infected tissue. Systemic antibiotics are reserved for more complicated scenarios—such as spread beyond the canal, surrounding soft-tissue cellulitis, diabetes or immune compromise, or when topical therapy cannot be effectively delivered. Antihistamines or intravenous fluids don’t address the infection in the ear canal and aren’t first-line options for otitis externa.

Otitis externa is an infection confined to the external ear canal, so the treatment goal is to deliver antibiotic directly to the site of infection. Topical antibiotic ear drops achieve high concentrations right at the affected area, effectively treating the localized infection with minimal systemic exposure. This makes them the best initial choice for uncomplicated cases, often with added anti-inflammatory drops to reduce swelling and itching and help the canal stay clear for drainage. If the canal is very swollen or blocked, a wick may be used so the drops can reach all infected tissue.

Systemic antibiotics are reserved for more complicated scenarios—such as spread beyond the canal, surrounding soft-tissue cellulitis, diabetes or immune compromise, or when topical therapy cannot be effectively delivered. Antihistamines or intravenous fluids don’t address the infection in the ear canal and aren’t first-line options for otitis externa.