Pityriasis Corporis: Causes, Symptoms, and Treatment

Pityriasis Corporis is a superficial fungal infection of the skin, commonly caused by dermatophyte fungi such as Trichophyton or Microsporum species. It affects the body (trunk, arms, and legs) and is a form of tinea (ringworm) infection. The condition is characterized by red, scaly, and itchy patches that may expand over time.

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Causes

Pityriasis corporis is caused by fungal infections, which spread through:

• Direct skin contact with an infected person or animal.

• Contaminated objects such as towels, clothing, or gym equipment.

• Warm and humid conditions that promote fungal growth.

• Weakened immune system or underlying medical conditions like diabetes.

• Excessive sweating (hyperhidrosis), making the skin more prone to infection.

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Symptoms

• Circular or ring-shaped red patches with slightly raised borders.

• Itchy, scaly, or flaky lesions that may spread over time.

• Mild inflammation or burning sensation in severe cases.

• Patches may merge, leading to larger affected areas.

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Diagnosis

• Physical examination – Doctors check for characteristic ring-like lesions.

• Wood’s lamp examination – A special UV light may be used to detect fungal infections.

• Skin scraping (KOH test) – Microscopic examination of skin flakes to confirm fungal presence.

• Fungal culture – Helps identify the specific type of fungus causing the infection.

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Treatment

1. Topical Antifungal Medications (For Mild Cases)

• Clotrimazole, Miconazole, or Terbinafine creams applied 1-2 times daily.

• Ketoconazole or Ciclopirox for more persistent infections.

• Keep using antifungal creams for at least 2 weeks after symptoms disappear to prevent recurrence.

2. Oral Antifungal Medications (For Severe or Widespread Infections)

• Terbinafine, Fluconazole, or Itraconazole tablets.

• Usually prescribed for 2-6 weeks, depending on severity.

3. Home Care & Prevention

• Maintain good hygiene – Shower daily and keep skin dry.

• Avoid sharing personal items like towels, clothing, or razors.

• Wear loose, breathable clothing to reduce moisture buildup.

• Use antifungal powders if prone to sweating.

• Disinfect surfaces and bedding to prevent reinfection.

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Prognosis & Complications

• With treatment, most cases resolve within 2-4 weeks.

• Untreated infections may spread, leading to chronic or recurrent outbreaks.

• Scratching can cause secondary bacterial infections, requiring antibiotics.

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Pityriasis corporis is treatable with proper antifungal care. If symptoms persist or worsen, consult a doctor for stronger treatments.

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