Sun Allergy (Polymorphous Light Eruption - PMLE)
Definition: Sun allergy is an abnormal immune reaction of the skin to sunlight, resulting in red, itchy rashes or bumps.
Cause: The exact cause is unclear but is linked to the immune system’s reaction to UV radiation.
Types:
- PMLE: The most common type, often presenting as itchy red bumps or patches.
- Solar urticaria: Hives develop on exposed areas within minutes of sun exposure.
Protection Before the Cause: - Gradual sun exposure can help build tolerance.
- Use broad-spectrum sunscreen and protective clothing.
- Take antihistamines before sun exposure if diagnosed with solar urticaria.
Cure After the Cause: - Cold compresses and calamine lotion can soothe the skin.
- Topical corticosteroids to reduce inflammation and itching.
- Avoid further sun exposure until the symptoms resolve.
Conclusion: Sun allergies can significantly impact quality of life but can often be managed with protective measures and prompt treatment.