Mycetoma

Mycetoma, also known as Madura foot or maduromycosis, is a chronic, progressive, and destructive subcutaneous infection caused by certain species of fungi (eumycetoma) or filamentous bacteria (actinomycetoma). It is classified as a neglected tropical disease by the World Health Organization. The disease typically affects the foot but can involve any part of the body, including the hands, back, and other extremities. It is acquired through traumatic inoculation of the causative organism into the skin, often via thorns, splinters, or other penetrating injuries. Mycetoma is most prevalent in tropical and subtropical regions, particularly in the so-called "mycetoma belt" stretching across Africa, the Middle East, and parts of Asia and Latin America. The hallmark clinical triad of mycetoma consists of a painless subcutaneous mass (tumefaction), multiple draining sinuses, and the discharge of grains (colonies of the causative organism). The disease progressively involves deeper tissues including fascia, muscle, and bone, leading to significant tissue destruction and deformity. If left untreated, it can cause severe disability and may necessitate amputation. The infection primarily affects the musculoskeletal system and skin. Secondary bacterial infections of the sinuses are common and can cause pain and systemic illness. Treatment depends on the causative agent. Actinomycetoma generally responds well to prolonged courses of combined antibiotic therapy, typically including trimethoprim-sulfamethoxazole with amikacin or other agents, administered for months to years. Eumycetoma is more challenging to treat and often requires prolonged antifungal therapy (such as itraconazole, voriconazole, or posaconazole) combined with surgical excision. In advanced cases with extensive bone involvement, amputation may be the only option. Early diagnosis and treatment are critical to improving outcomes and preventing disability.

Data sourced from FDA regulatory filings and ClinicalTrials.gov. Updated periodically.

Common questions about Mycetoma