• Tinea capitis (ringworm of the scalp) is caused by dermatophytic fungi
• Trichophyton tonsurans is the most common species in the US, and does NOT flouresce under Wood's lamp
• Griseofulvin (20-25mg/kg/ day orally) is the standard first-line therapy in children older than 2 years, and has a good safety profile
• Both tablet and suspension formulations are available, and it should be taken with food that are high in fat to increase drug concentrations
• NO laboratory assessment of hepatic enzymes is required during the 8-week therapy course in children who have no history or clinical examination findings concerning for liver disease.
• Topical antifungal agents are ineffective because they do not penetrate sufficiently into the hair shaft.

References

2012 PREP Self-Assessment, Pediatrics Review and Education Program