How to treat “tinea” fungal infections ?

A simple guide to manage infections such as “athlete’s foot”

Teja V Surapaneni, MD, MS
YourMD.online
Published in
4 min readJan 28, 2024

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Tinea infections (sometimes known as ringworm) are a type of fungal infection caused by dermatophytes. These diseases are named from their location on the body, such as Tinea Pedis (athlete’s foot), Tinea Corporis (body ringworm), Tinea Cruris (jock itch), and Tinea Capitis (scalp ringworm). This article examines the causes, symptoms, rash appearances, management, and treatment of various tinea infections.

Causes and Symptoms

Tinea infections are caused by fungi, primarily from the genera Trichophyton, Microsporum, and Epidermophyton. These fungus prefer warm, damp settings and are extremely infectious. They can be transmitted directly from an infected person or animal, or indirectly by contact with contaminated objects such as towels, clothing, or flooring.

Common symptoms include an itchy, red, and scaly rash.
Symptoms may include a circular rash with clear skin in the center, as well as cracking, peeling, or blistering skin.

Types of Tinea Infections and Their Appearance

  1. Tinea Pedis (Athlete’s Foot): Frequently affects the space between the toes and the soles of the feet. Look for peeling, redness, itching, burning, and, in some cases, blisters and sores.

2. Tinea Corporis (Ringworm of the Body): Ring-shaped areas on the skin, frequently with a raised, scaly border.

3. Tinea Cruris (Jock Itch): Appearance in the groin, with a red-brown center and scorching or cracking.

4. Tinea Capitis (Scalp Ringworm): Typically affects youngsters, resulting in scaly, itchy spots on the scalp, hair loss, and swollen lymph nodes.

5. Tinea Unguium (Nail Fungus): Thickens, discolors, and crumbles the nails.

Management and Treatment:

General Management — Maintain proper hygiene.

- Keep the afflicted regions clean and dry.
- Avoid sharing personal belongings such as towels and clothing.
- Choose breathable, moisture-wicking textiles.

OTC Treatments — Mild infections can be treated with antifungal creams, lotions, or powders containing clotrimazole, miconazole, or terbinafine.

Prescription Treatments

1. Topical Antifungals: Terbinafine, naftifine, or ciclopirox are recommended for chronic infections.

2. Oral Antifungals: include terbinafine, itraconazole, and fluconazole. These are usually reserved for severe or extensive infections, particularly, tinea capitis and tinea unguium.

  • Tinea Pedis: Treatment should last 1–2 weeks, even if symptoms improve sooner.
  • Tinea Corporis often requires 1–3 weeks of treatment.
  • Tinea Cruris: Treatment usually lasts two to four weeks.
  • Tinea Capitis: Requires a longer length, typically 6–12 weeks.
  • Tinea Unguium: Treatment may take several months due to delayed nail growth.

Cautions and Considerations

  • Because of the possibility of liver toxicity, baseline liver function testing are indicated before beginning oral terbinafine therapy.
  • Use topical antifungals with caution and keep an eye out for allergic reactions or skin irritation.
  • Oral antifungals can interact with other drugs and are not indicated for patients with certain pre-existing medical conditions.

Tinea infections, while prevalent, can be successfully treated with adequate care. To avoid recurrence, it is critical to adhere to the suggested treatment plan and adopt preventative measures. Consult a healthcare professional for an accurate diagnosis and therapy that is suited to your individual condition.

References

  1. American Academy of Dermatology. Ringworm Overview.
  2. Mayo Clinic. Ringworm (body).
  3. Centers for Disease Control and Prevention. Fungal diseases.

Please keep in mind that this article is provided for informative purposes only and is not intended to replace professional medical advice, diagnosis, or treatment.

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