It looks like you meant Pityriasis Rosea, as there is no condition called “Tinea Rosea.” Pityriasis Rosea is a common, self-limiting skin rash that typically appears as a large, scaly “herald patch” followed by smaller patches on the body. It is not a fungal infection like tinea (ringworm) but is believed to be triggered by a viral infection.
Causes of Pityriasis Rosea
- Exact cause unknown, but suspected to be linked to reactivation of human herpesvirus (HHV-6 or HHV-7).
- More common in young adults (10–35 years old).
- Often occurs seasonally (spring & fall).
- Not highly contagious but may have viral links.
Symptoms of Pityriasis Rosea
1. Initial “Herald Patch” (First Sign)
- Single, large, oval, pink/red scaly patch (2–10 cm).
- Usually appears on the chest, back, or abdomen.
2. Secondary Rash (1–2 Weeks Later)
- Multiple smaller oval patches appear, mainly on the torso, back, upper arms, and legs.
- The rash often follows a “Christmas tree pattern” on the back.
- Mild itching (can be severe in some cases).
3. Other Symptoms
- Fatigue, headache, or mild fever (in some cases).
Diagnosis of Pityriasis Rosea
- Clinical examination (based on rash appearance).
- No specific test needed, but doctors may perform:
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- KOH test (to rule out fungal infections like tinea corporis).
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- Blood tests or biopsy (if symptoms are unclear or last too long).
Treatment of Pityriasis Rosea
No specific cure – it usually resolves on its own in 6–8 weeks.
1. Symptom Relief
- Moisturizers & gentle skincare (for dryness).
- Antihistamines (e.g., cetirizine, diphenhydramine) – Helps relieve itching.
- Mild steroid creams (hydrocortisone 1%) for inflammation.
- Oatmeal baths or calamine lotion – Soothes itching.
2. Light Therapy (If Severe Itching)
- Natural sunlight or UVB phototherapy may help clear the rash faster.
3. Antiviral Treatment (Rare Cases)
- Acyclovir may be used in severe or prolonged cases.