ID:IOTS - Infectious Disease Insight Of Two Specialists 123. Moulds: Dermatophytes
Nov 3, 2025
Dive into the fascinating world of dermatophytes, the fungi behind common skin infections. Discover how different types, like tinea capitis and athlete's foot, are transmitted and their clinical significance. Learn about the varying names and classifications of these fungi, along with effective treatment options. The hosts also explore diagnostic techniques such as KOH microscopy and culture identification. With a mix of humor and insight, this discussion shines a light on the prevalence and impact of these infections in everyday life.
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What Dermatophytes Are
- Dermatophytes invade dead keratinised tissue like skin, hair, and nails and cause tinea (dermatophytosis).
- Main genera are Trichophyton, Microsporum and Epidermophyton with site-based clinical names (e.g., tinea capitis, corporis, pedis).
Transmission Patterns
- Transmission depends on reservoir: anthropophilic (human), zoophilic (animal) or geophilic (soil).
- Spread occurs via direct contact, contaminated surfaces, or environmental exposure in moist settings.
Burden And Severity
- Onychomycosis is the most common dermatophyte disease in the UK and affects about 5% of adults.
- Dermatophyte infections rarely cause serious harm but can be invasive in patients with cellular immune defects.
