A31.1

Clinical Causes: Exposure to contaminated water bodies containing Mycobacterium marinum, often through skin cuts or abrasions. Contact with environments contaminated with Mycobacterium ulcerans, often in rural or swampy areas. Injury or trauma that breaches the skin barrier, allowing bacteria to enter. Rarely, person-to-person transmission, though most cases result from environmental exposure.

Key Symptoms: Initial skin lesions that may appear as small bumps or nodules. Progression of skin swellings that can enlarge over weeks or months. Development of ulcers with a characteristic undermined edge, typical of Buruli ulcer. Possible skin induration, color changes, or necrosis in the affected area. In some cases, symptoms may include mild pain or discomfort around the lesion.

Diagnosis Path: Diagnosis often involves a combination of clinical examination and laboratory tests. Skin samples from lesions may be examined using microscopy, culture, or molecular techniques like PCR to identify Mycobacterium species. Imaging studies might be used in some cases to assess the extent of tissue involvement, especially in Buruli ulcer. A healthcare professional may also consider patient history, including exposure risk factors.

Treatment Protocols: Prolonged course of antibiotics specific to the causative bacteria, such as rifampicin and clarithromycin. Surgical intervention may be needed for debridement or to repair extensive tissue damage. Early identification and treatment are essential to prevent complications like deep tissue destruction or disability. In some cases, physical therapy and wound care are necessary for recovery.