B48.3

Clinical Causes: Infection by the fungus Geotrichum candidum, a naturally occurring yeast often present in soil, air, and decaying organic matter. Immunosuppression resulting from diseases such as HIV/AIDS, cancer treatments, or medication use including corticosteroids and chemotherapy. Poor oral hygiene that allows the yeast to grow unchecked. Use of inhaled corticosteroids or other inhaled medications which can alter oral flora. Underlying health conditions such as diabetes mellitus that impair the immune response. Prolonged antibiotic use that disrupts normal microbial balance. Eating or exposure to contaminated soil or organic material.

Key Symptoms: White or cream-colored patches on the oral mucosa, often resembling cottage cheese or curd-like material. Redness and inflammation in the affected areas of the mouth. Soreness or pain in the mouth or throat. Difficulty swallowing or a sore throat in some cases. Cracking or fissuring at the corners of the mouth (angular stomatitis). Loss of taste or an unpleasant metallic taste in the mouth. In more severe cases, superficial ulcerations may develop.

Diagnosis Path: Diagnosis of geotrichosis involves a combination of clinical examination and laboratory testing. Healthcare professionals typically perform oral examinations to identify characteristic patches or lesions. To confirm the diagnosis, samples of affected tissue or oral secretions may be taken for laboratory analysis. Microscopic examination can reveal the presence of Geotrichum fungi, which appear as hyphae with distinct septations. Culturing the organisms in a laboratory setting can help identify the specific fungal species involved. Differential diagnosis should rule out other oral infections such as candidiasis or bacterial stomatitis.

Treatment Protocols: Treatment for geotrichosis usually involves antifungal medications aimed at eradicating the fungal infection. Common approaches include: - **Topical antifungal agents**: Such as nystatin or clotrimazole, often used as mouthwashes or troches to directly target the affected areas. - **Systemic antifungal therapy**: In more severe or persistent cases, oral antifungal medications like fluconazole or itraconazole may be prescribed. - **Addressing underlying conditions**: Managing predisposing factors such as improving oral hygiene, controlling systemic illnesses like diabetes, or adjusting immunosuppressive therapy when possible. - **Supportive care**: Maintaining good oral hygiene and avoiding irritants such as tobacco, spicy foods, or alcohol. It is important for anyone diagnosed with geotrichosis to follow healthcare provider instructions closely, continue prescribed treatments, and attend follow-up appointments to ensure complete recovery.