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Chapter 76 – Fungal Diseases

Jenny O Sobera,
Boni E Elewski

Key features

      Cutaneous fungal infections are broadly divided into those that are limited to the stratum corneum, hair and nails, and those that involve the dermis and subcutaneous tissues
      Superficial fungal infections of the skin are due primarily to dermatophytes and Candida species
      ‘Subcutaneous’ mycoses are often the result of implantation, while systemic or ‘deep’ mycoses of the skin usually represent hematogenous spread or extension from underlying structures
      In the immunocompromised host, opportunistic fungi, e.g. Aspergillus and Mucor, can lead to both cutaneous and systemic infections

This chapter reviews common cutaneous fungal infections, and they are subdivided into three major groups: (1) ‘superficial’; (2) ‘subcutaneous’; and (3) ‘deep’ or systemic (Table 76.1).

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The superficial mycoses are due to fungi that only invade fully keratinized tissues, i.e. stratum corneum, hair and nails. They can be …