Cutaneous Candidiasis: Skin Yeast Infections Explained

Yes, yeast infections can occur on the skin. This condition is called cutaneous candidiasis, caused by overgrowth of Candida species (most commonly C. albicans), a fungus that normally lives harmlessly on skin and mucosa.

Common Sites (Warm, Moist, Occluded Areas)

• Intertriginous zones: axillae, groin, inframammary folds, abdominal pannus
• Genital: vulva, scrotum, perineum
• Hands: interdigital spaces (dishwashers, frequent hand-washers)
• Feet: toe webs (often with tinea pedis)
• Diaper area (infants)
• Nail folds (paronychia)

Clinical Presentation

• Erythematous, moist patches/plaques with peripheral scaling ("collarette")
• Satellite lesions: Small pustules/papules beyond main border (hallmark)
• Pruritus, burning, discomfort
• Maceration, fissuring in deep folds

Risk Factors

• Obesity, diabetes, immunosuppression
• Antibiotics (disrupt normal flora)
• Corticosteroids (topical/systemic)
• Occlusive clothing, hyperhidrosis
• Poor hygiene / incontinence

Diagnosis

• Clinical appearance + KOH prep (budding yeast + pseudohyphae)
• Culture if recurrent, refractory, or atypical

Treatment

• Topical antifungals (1st line): Clotrimazole, miconazole, ketoconazole, nystatin, ciclopirox. Apply 2x/day × 2–4 weeks.
• Oral antifungals: Fluconazole 100–200 mg daily × 1–2 weeks for extensive, refractory, or immunocompromised.
• Adjunctive: Drying powders (zeasorb-AF), barrier creams, weight loss, glucose control, loose cotton clothing.

Prevention

• Keep folds clean and dry
• Change damp clothing promptly
• Manage diabetes
• Limit unnecessary antibiotics
• Probiotics (oral/topical) may help restore microbiome

Cutaneous candidiasis is common, treatable, and often recurrent if predisposing factors persist. Address the environment, not just the fungus.