Candida Skin Infections

Candidal skin infection is a superficial yeast infection, usually caused by Candida albicans. It favours warm, moist, occluded skin folds such as the groin, axillae, inframammary folds, abdominal folds, perineum and interdigital spaces.

⚠️ Risk Factors

• Diabetes mellitus
• Obesity
• Pregnancy
• Immunosuppression
• Recent antibiotics
• Incontinence, sweating or chronic maceration
• Occlusive clothing or dressings

🔍 Clinical Features

• Bright red, moist erythema in a skin fold
• Itch, soreness, burning or tenderness
• Maceration, fissuring or superficial scaling
• Satellite papules or pustules
• Consider bacterial infection if painful, weeping, crusted or malodorous

The classic clue is erythematous intertrigo with satellite pustules. Candida overgrows when the stratum corneum is macerated, so successful treatment requires both antifungal therapy and correction of the moist skin environment.

🤔 Differential Diagnosis

• Tinea cruris or tinea corporis
• Flexural psoriasis
• Eczema or contact dermatitis
• Erythrasma
• Bacterial intertrigo
• Seborrhoeic dermatitis

🧪 Investigations

• Usually a clinical diagnosis
• Consider skin swab, scraping or fungal culture if diagnosis is uncertain
• Check HbA1c or glucose if recurrent, extensive or risk factors for diabetes
• Consider bacterial swab if cellulitis, weeping, crusting, malodour or treatment failure

✅ NICE-Aligned Management

• Keep the area clean and dry
• Reduce friction, sweating and occlusion
• Advise loose, breathable clothing
• Optimise diabetes control where relevant
• Prescribe a topical imidazole antifungal for adults
• Options include clotrimazole, econazole, miconazole or ketoconazole
• Apply according to product instructions, BNF and local formulary guidance

💊 If Inflamed or Itchy

• Continue topical antifungal treatment
• Consider a short course of mild topical corticosteroid if inflammation or itch is troublesome
• Hydrocortisone 1% may be used briefly with antifungal cover
• Avoid potent topical steroids in flexures unless specialist advised
• Never use topical steroid alone for suspected fungal infection

🚩 Severe, Recurrent or Refractory Disease

• Reassess the diagnosis and adherence
• Review diabetes, immunosuppression, obesity, incontinence and occlusion
• Consider fungal microscopy and culture
• Oral antifungal treatment is not routinely needed for uncomplicated localised disease
• Consider specialist advice before systemic treatment, especially in pregnancy, liver disease, immunosuppression or complex polypharmacy

💊 Prescribing Notes

• Topical imidazoles are first-line for most localised adult cases
• Miconazole may interact with warfarin; check current guidance
• Systemic azoles have important interactions, including warfarin, some statins, sulfonylureas and QT-prolonging drugs
• Check pregnancy and breastfeeding guidance before prescribing

📞 Refer or Seek Advice

• Diagnostic uncertainty
• Severe, extensive or recurrent infection
• Failure of appropriate topical treatment
• Immunocompromised patient
• Rapid progression, ulceration, necrosis, cellulitis or systemic symptoms
• Suspected invasive or systemic fungal infection

🧠 Clinical Pearls

• Satellite pustules support Candida
• Tinea often has an annular scaly edge with central clearing
• Flexural psoriasis is often smooth, shiny and sharply demarcated
• Erythrasma may fluoresce coral-pink under Wood lamp
• Persistent “Candida” is often moisture, friction, steroid use, diabetes or misdiagnosis

⚕️ Disclaimer

This article is for clinician education and revision. Prescribing should follow current NICE CKS, local antimicrobial guidance, the BNF, patient-specific contraindications and senior or specialist advice where needed.