After being scalded by boiling water, immediately rinse the scalded area with running cold water for at least half an hour, or until the pain eases, then assess the condition of the burn. If the scalded area is only red and experiencing severe pain, applying toothpaste, aloe, or tung oil topically can have a cooling and pain-relieving effect. Pain relief medications, such as oral painkillers or celecoxib, can also be used to alleviate the symptoms. If blisters appear on the scalded area or if the skin starts peeling, immediately go to the hospital for further treatment. Disinfect the wound thoroughly with iodine to prevent infection, then apply burn ointment to the surface to promote healing of the scalded tissue. If there are large blisters, use a sterile syringe to aspirate the fluid, or make a small cut at the base of the blister to drain the fluid, which can facilitate recovery. Apply erythromycin ointment to the surface to prevent infection. (Medication should be used under the guidance of a physician.)