First aid treatment for first-degree burns focuses on relieving the pain caused by burns and preventing further damage to the affected tissues. This treatment can be done by running cool water over the area and keeping the burn clean to prevent infection, according to Mayo Clinic.
Pain relief consists of running cool, but not cold, water over the burn site and applying a topical ointment containing aloe, explains Mayo Clinic. Remove restrictive clothing or jewelry to reduce the risk of harm caused by swelling, which can set in within minutes of the burn. If blisters form over the injured site, it is important to leave them intact, as they protect the sensitive tissue underneath and keep the area free of infection. An over-the-counter pain reliever can be taken, if needed, and victims of superficial burns are also advised to get a tetanus shot as a precaution if their immunity from the immunization has worn off.
If the burn covers a large area, or if large blisters form, seek medical attention without delay, recommends Mayo Clinic. Though first-degree burns are superficial, extensive burns cannot be safely treated without a doctor's supervision, and prescription-strength pain relief medications might be necessary to relieve any pain.