Tinea incognito

Tinea Incognito is a fungal infection of the skin, typically caused by dermatophytes. The term "incognito" refers to the altered clinical appearance of the infection, often due to inappropriate use of topical or systemic corticosteroids or other immunosuppressive agents.

Etiology

Tinea Incognito is caused by a variety of dermatophytes, which are fungi that require keratin for growth. These fungi can cause superficial infections of the skin, hair, and nails. Dermatophytes are spread by direct contact from other people (anthropophilic), animals (zoophilic), and soil (geophilic). They can also be spread indirectly via fomites.

Clinical Presentation

The clinical presentation of Tinea Incognito can vary widely due to the modifying effect of immunosuppressive agents. It often presents as an extensive, erythematous, slightly scaly plaque with a well-defined border. The infection may also present with unusual clinical features such as pustules, vesicles, or abscesses.

Diagnosis

Diagnosis of Tinea Incognito is typically made by clinical examination and confirmed by microscopy and culture of skin scrapings. The use of a Wood's lamp, which emits ultraviolet light, can also aid in diagnosis.

Treatment

Treatment of Tinea Incognito involves discontinuation of the immunosuppressive agent and administration of appropriate antifungal therapy. Topical antifungal agents are often sufficient for localized infection, while systemic therapy may be required for extensive disease.

Prevention

Prevention of Tinea Incognito involves good personal hygiene and avoidance of contact with infected individuals or animals. Regular hand washing and not sharing personal items such as towels or hairbrushes can also help prevent spread of the infection.

See Also

• Dermatophytosis
• Tinea Corporis
• Tinea Cruris
• Tinea Pedis
• Tinea Capitis