After a burn, the pain persists primarily because the wound was not properly treated. The most common and simplest method in the early stages of a burn is to soak the burn in cold water or rinse it under running water for over half an hour. This can help wash away the residual heat on the surface, especially making it more effective for acid or alkali burns. Alternatively, you can use an ice pack to cool the area. After cooling, apply some burn ointment. If the pain is severe, pain-relieving medication can be used to treat symptoms, such as ibuprofen. If the pain is unbearable, it is advised that the patient should go to the hospital for timely examination and symptomatic treatment.