For painful ulcer treatment caused by Hemophilus ducreyi, which medication is commonly used?

The treatment of painful ulcers caused by Haemophilus ducreyi, which is responsible for chancroid, often involves the use of antibiotics that are effective against this organism. Ceftriaxone administered intramuscularly and azithromycin are both recommended and effective options for treating chancroid.

Ceftriaxone is a broad-spectrum cephalosporin that possesses excellent activity against a variety of Gram-negative bacteria, including Haemophilus ducreyi. Azithromycin, a macrolide antibiotic, is also effective against this pathogen and has the advantage of being given as a single oral dose.

Both medications target the bacterium effectively, alleviating the symptoms of the painful ulcers associated with this infection. The ability to utilize azithromycin as an oral option is particularly advantageous due to its ease of administration and favorable side-effect profile, making it a practical choice for outpatient treatment.

The other options listed, such as oral azithromycin alone or IV oxacillin, do not represent the best treatment approaches for this specific infection. While oral azithromycin could be part of the correct answer if stated properly, it lacks the specificity included in the combination of ceftriaxone or azithromycin noted as the effective standards for treatment