Motile Aeromonas infections of the foot are caused mostly by post-traumatic incidence, occurring mostly during summer months. Serious complications such as osteomyelitis and amputation can result if the infections go untreated or are inadequately treated. The role of each species of motile Aeromonas in pathogenesis and response to antimicrobial agents is not well understood because of taxonomic uncertainty. As a group, motile Aeromonas respond well to aminoglycosides, second-generation and third-generation cephalosporins, quinolones, and some beta-lactam antibiotics.
Chromoblastomycosis is a cutaneous-subcutaneous fungal infection that is being seen more frequently in patients living in the US. The disease normally occurs in patients living in tropical and subtropical regions, but as the number of immigrants into the US increases, podiatrists must be able to recognize the manifestations of chromoblastomycosis. The most common sight involved is the lower extremity where it easily can be confused with other diseases such as tertiary syphilis, phaeohyphomycosis, and cutaneous tuberculosis, among others. Small lesions should be excised, while antifungal drugs, such as itraconazole, should be used when more tissue is involved.