Persistent Itching After Sunburn: What to Know

Itching persisting 3 weeks after sunburn is not typical. Normal sunburn itch resolves in days.

Possible Reasons for Prolonged Itch

• Ongoing barrier repair: Damaged stratum corneum → nerve sensitization.
• Contact allergy: Sunscreen, aloe, after‑sun products.
• Secondary infection: Impetigo, folliculitis (look for pus, honey crust, fever).
• Underlying dermatosis: Eczema, psoriasis unmasked by UV.
• Photosensitivity disorder: Polymorphous light eruption, lupus.

Recommendation

See a dermatologist for exam, possible patch testing, and targeted therapy.