Blisters on skin after sun exposure

Keep the area out of direct sunlight while it heals. Do not deliberately open the blisters, because their intact roofs protect the tender skin underneath.

Strong ultraviolet exposure can inflame and damage several layers of skin. Fluid then collects between those layers, creating tense or soft bubbles. Blistering may appear after the exposure rather than while you are outdoors, and the surrounding skin can remain hot, red, swollen, or sore.

Not every blister after time outdoors is caused by sunlight. The pattern, exposed body areas, recent products or plants, pain, itch, and other symptoms help a clinician distinguish sunburn from contact dermatitis or another blistering problem.

Move into shade or indoors and cool the skin with a cool, damp cloth or a comfortably cool shower. Avoid ice directly on the burn. Drink fluids, wear loose clothing, and cover the area from further sun exposure without rubbing it.

If a blister breaks by itself, wash your hands, gently clean the area, leave the remaining skin in place, and cover it with a clean non-stick dressing. Seek pharmacy or clinical advice before applying medicated creams to a large, raw, or very painful area.

Arrange prompt assessment for extensive blistering, severe or worsening pain, blisters on the face or around the eyes, or signs of infection such as spreading redness, warmth, swelling, pus, or increasing tenderness.

Get urgent help if blistering follows sun exposure and you also develop confusion, fainting, marked weakness, repeated vomiting, difficulty drinking, very little urine, breathing trouble, or rapidly worsening illness. These symptoms can reflect heat illness, dehydration, or a more serious reaction and should not be managed only at home.

Ask whether the distribution fits sunburn, which dressing will avoid sticking, what pain relief is suitable with your medicines and health conditions, and how to recognise infection. Mention any new skin product, medicine, plant exposure, fever, eye discomfort, or similar previous episode.