Fungal skin infections are among the most common skin issues, particularly in hot and humid climates. They spread easily between family members and in public spaces. The ClinicsJo Editorial Team reviews the types and treatments.
Types of Fungal Skin Infections
1. Athlete's Foot (Tinea Pedis)
The most common. Between toes and on soles. Itching, cracks, peeling, foul odor. Spreads in damp shoes and pools.
2. Jock Itch (Tinea Cruris)
In the groin area. Red itchy ring. More common in men and athletes.
3. Ringworm of the Body (Tinea Corporis)
A red circular patch with raised, itchy border, anywhere on the body.
4. Scalp Ringworm (Tinea Capitis)
On the scalp, causes patchy hair loss and scaling. Common in children.
5. Pityriasis Versicolor
Light or dark patches on chest, back, and shoulders. Common in summer.
6. Nail Fungus (Onychomycosis)
Thickened nail, color change (yellow, brown), brittleness, detachment. Hard to treat.
7. Oral Candidiasis
White patches inside the mouth. Common in infants and immunocompromised patients.
8. Vaginal Candidiasis
White discharge and severe itching (covered in the women's health section).
Causes of Fungal Infections
- Humidity and sweating.
- Closed shoes.
- Sharing personal items.
- Weak immunity (diabetes, chemo).
- Prolonged antibiotic courses.
- Obesity (skin folds).
- Frequent swimming.
- Public facilities (gyms, pools, hotels).
Diagnosis
- Clinical examination.
- Wood's lamp (illuminates some fungi).
- Skin scraping and microscopic exam (KOH test).
- Fungal culture for complex cases.
Topical Treatment
- Azole creams: clotrimazole, miconazole, ketoconazole. Twice daily for 2–4 weeks.
- Topical terbinafine (Lamisil): effective in 1–2 weeks.
- Ciclopirox.
- Ketoconazole shampoo: for pityriasis and scalp dandruff.
- Nail lacquers: amorolfine, ciclopirox (limited efficacy).
Oral Treatment
For widespread, resistant cases, or nail fungus:
- Terbinafine (Lamisil): 250 mg daily for 6 weeks (tinea) or 12 weeks (nails).
- Itraconazole (Sporanox): in pulse therapy cycles.
- Fluconazole: weekly for pityriasis and candida.
- Griseofulvin: older, less used.
These medications require a prescription and periodic liver function monitoring.
Treating Nail Fungus
The most challenging:
- 3-month oral terbinafine — 70–80% cure rate.
- Laser therapy — multiple sessions.
- Nail removal in severe cases.
- Patience — healthy nail grows slowly; 9–12 months to see a clean nail.
Medical tip: Fungal infections recur easily. Complete the entire treatment course even after symptoms disappear, and adopt lifelong prevention measures.
Prevention
- Dry skin thoroughly after bathing, especially between toes.
- Wear cotton, moisture-absorbing socks.
- Change socks daily, sometimes twice.
- Avoid plastic or non-breathable shoes.
- Don't walk barefoot in public spaces.
- Don't share towels and clothes.
- Disinfect shoes with antifungal sprays.
- Dry the groin and armpits thoroughly.
- Control blood sugar if you have diabetes.
When to See a Doctor
- Infection not improving after 2 weeks of topical treatment.
- Scalp fungal infection.
- Nail fungus.
- Widespread body infection.
- Recurrent infection.
- Diabetes or weakened immunity.
For accurate diagnosis and effective treatment, book an appointment with a dermatologist on ClinicsJo.
