Fungal Infection Treatment

Introduction

• Fungal infections can be treated with various therapies, including topical and oral medications, as recommended by the American Academy of Pediatrics and the Centers for Disease Control and Prevention 1, 2

Topical Treatment Options

• The American Academy of Pediatrics recommends applying Terbinafine 1% cream once daily for 1-2 weeks, which offers faster clinical resolution than other topical agents, for children 12 years and older 1
• Ciclopirox olamine 0.77% cream/gel applied twice daily for 4 weeks achieves both clinical and mycological cure rates of ~60% at end of treatment and 85% two weeks after treatment, and is superior to 1% clotrimazole cream 1
• Clotrimazole 1% cream, Miconazole 2% cream, and Butenafine are other effective topical options, with application frequencies and durations varying from twice daily for 2-4 weeks 1
• Naftifine 1% shows higher mycological cure rates than placebo (RR 2.38, 95% CI 1.80-3.14) 1
• Topical therapy is the preferred treatment for localized infection, with options including:

Oral Treatment Options

• The American Academy of Pediatrics recommends oral Terbinafine 250 mg once daily for 1 week, which has similar efficacy to 4 weeks of clotrimazole 1% cream but with faster clinical resolution 1
• Itraconazole 100 mg once daily for 2 weeks has similar mycological efficacy to terbinafine but may have slightly higher relapse rate 1
• Itraconazole 100 mg once daily for 15 days has been shown to have an 87% mycological cure rate, as recommended by the American Academy of Pediatrics 1
• Systemic antifungal medications are recommended as follows:

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Prevention and Hygiene

• Applying foot powder after bathing reduces infection rates from 8.5% to 2.1% 1
• Thoroughly drying between toes after showering, changing socks daily, and periodically cleaning athletic footwear are recommended hygiene practices 1
• The American Academy of Pediatrics suggests applying antifungal powders to shoes and between toes after bathing to prevent fungal infections 1
• Daily changes of socks and thorough drying between toes are recommended by the American Academy of Pediatrics to prevent fungal infections 1
• Avoiding sharing towels and personal items, as well as periodic cleaning of athletic footwear, are recommended by the American Academy of Pediatrics to prevent the spread of fungal infections 1
• Applying antifungal powders containing miconazole or clotrimazole can help prevent reinfection 1, 4, 5
• The Centers for Disease Control and Prevention recommend examining and treating all household members for anthropophilic infections 1, 4, 5
• For footwear-related infections, consider discarding heavily contaminated footwear, using antifungal powders inside shoes, and wearing cotton, absorbent socks 5

Diagnosis and Follow-up

• Microscopic examination (KOH preparation) or fungal culture can confirm diagnosis, especially for stubborn ringworm cases 4
• PCR can detect fungal DNA with high clinical accuracy, sensitivity of 90.9%, and specificity of 94.1% for detecting Candida species, as recommended by the Infectious Diseases Society of America 6
• Follow-up mycological examination is recommended until mycological clearance is achieved, especially in resistant or recurrent cases 4
• Treatment can be initiated while awaiting confirmatory mycology if clinical signs are present, including scale, lymphadenopathy, alopecia, and kerion 4
• Continue treatment until mycological cure is achieved, with clinical improvement typically expected within 1-2 weeks 4
• Treatment should continue for at least one week after clinical resolution 4, 1
• The endpoint of treatment should be mycological cure, not just clinical improvement 4, 1

Adverse Effects and Contraindications

• Griseofulvin is generally well-tolerated in children, with side effects including gastrointestinal disturbances and rashes in <8% of patients, and very few patients (0.8%) require discontinuation due to side effects 4
• Contraindications for griseofulvin include lupus erythematosus, porphyria, and severe liver disease 4
• Itraconazole is generally well-tolerated with primarily gastrointestinal side effects, cutaneous eruptions, and occasional headache 4
• Terbinafine is generally well-tolerated but can cause gastrointestinal and dermatological events; rare serious adverse reactions include Stevens-Johnson syndrome and hepatic toxicity (not recommended in patients with active or chronic liver disease) 5
• Oil-based creams and suppositories may weaken latex condoms and diaphragms, according to the Centers for Disease Control and Prevention 2
• Patients should return for follow-up only if symptoms persist or recur within 2 months, as recommended by the Centers for Disease Control and Prevention 2
• Unnecessary or inappropriate use of OTC preparations can delay proper treatment, according to the Centers for Disease Control and Prevention 2