sunbathe - blisters

•  Sunburns range in severity from mildly irritating to second- or third-degree burns

If you’ve developed blisters over a large part of your body, you should seek medical attention. Also, call the doctor if you develop a fever, chills, nausea or see signs of an infection. Remember, the best way to avoid a blistering sunburn is to prevent sun damage in the first place. Practice sun safe behavior by applying sunscreen with SPF (sun protective factor) 30 to 50 before going outside and wearing sun-protective clothing and sunglasses to shield your eyes and delicate skin around them.

https://www.skincancer.org/blog/ask-the-expert-what-should-i-do-if-i-get-a-blistering-sunburn/

• If you have a fever, chills, nausea, or vomiting, severe blistering or pain, call your doctor's office or a health clinic.

If you have blisters with no other problems, here's how to care for them:

    Don't pop or pick them. Blisters protect the skin underneath as they heal. If they get peeled off, the skin can get infected.

    Cool the burn. Use cold compresses off and on or take a quick shower or bath with cool water.

    If the burn is painful, take ibuprofen. Follow the package instructions for dosing.

    It's OK to use a moisturizer or aloe gel on the blisters. Avoid petroleum jelly or other heavy products, though, because they prevent heat or sweat from escaping.

    Protect your skin from sun while it's healing from the burn. Your skin will be tender, and more sun will only make things worse. If you need to go out in the sun, wear long, loose skirts or pants to cover the blisters until they're gone. Wear sunscreen after the blisters have healed. Don't use tanning beds.

https://kidshealth.org/en/teens/sunburn.html

•  How are sunburn blisters treated?

Sunburn blisters can often be treated at home. To do this, you should:

    Drink plenty of water. Sunburns will dehydrate you, which can prevent the blisters from healing.

    Place cold, damp compresses on the blisters to take some of the heat out of your skin.

    Apply moisturizer with aloe on the burn. The moisture will help the blisters heal sooner.

    Don’t pick or pop the blisters. This significantly increases the chance of infection and can cause damage to the skin that could lead to scarring.

    Take ibuprofen (Advil) to reduce swelling and significant discomfort.

    Avoid sun exposure until the blisters heal.

When cleaning the area, use cool water, don’t scrub the area, and use a mild antibacterial cleanser to remove any excess drainage, being careful not to rub too hard. Don’t use a cotton ball on the popped blister, as the small fibers may stick to the wound and increase the chance of an infection.

If your blisters are severe, your doctor may prescribe a corticosteroid for the swelling and itching. They may also prescribe a topical burn cream to help heal the skin faster.

https://www.healthline.com/health/sunburn-blisters#treatments