After a finger scald, how long it takes for the pain to alleviate depends on the severity of the burn, and the specific time cannot be confirmed. Generally, the pain caused by burns is mainly due to damage to the epidermis, which affects the peripheral nerves, leading to neuropathic pain. At the start of the burn, you can rinse with cold water for half an hour to appropriately alleviate the pain. However, this pain relief is only temporary, so you may need to take some medications to alleviate it, such as pain relievers or celecoxib, which might be effective. If the injury is deeper, affecting below the dermal layer and damaging the nerves, then there will be no pain, and there is no need to address the pain. (The use of medications should be under the guidance of a professional doctor.)