Sunburn is so common that people treat it as a minor inconvenience — but it’s actually an acute radiation injury that triggers an inflammatory cascade in the skin. The blistering, pain, and fluid shifts in a severe sunburn can genuinely make you sick. Treating it correctly matters.
What’s Happening in Your Skin
UV radiation damages DNA in skin cells, triggering cell death and intense inflammation. Blood vessels dilate, fluid leaks into tissue, nerve endings become hypersensitized. The peak inflammatory response typically occurs 12-24 hours after exposure, which is why burns often seem worse the next day.
What Actually Helps
Cool (not cold) compresses or a cool shower reduce heat in the skin. NSAIDs — ibuprofen specifically — are the most effective OTC treatment because they address the inflammatory mechanism directly. Take them early and consistently. Aloe vera gel (pure, without alcohol or fragrance) provides topical cooling. Stay hydrated — sunburn pulls fluid to the skin surface and systemic dehydration is common.
What Makes It Worse
Don’t use butter, oil, or petroleum jelly on an acute sunburn — these trap heat and slow recovery. Avoid lidocaine sprays and products with benzocaine. Don’t pop blisters — they protect the healing skin underneath and reduce infection risk.
When to Seek Same-Day Care
A sunburn requires evaluation if you have blistering over a large body surface area, signs of sun poisoning (nausea, vomiting, fever, chills, dizziness), signs of infection in a blistered area, or significant burns on the face, hands, or genitals. A Sickday licensed clinician can assess via telemedicine for mild-to-moderate presentations or via house call for more severe burns.
