Relief from pulpitis with cold water is a typical clinical manifestation of acute suppurative pulpitis, characterized by pain with heat and relief with cold. It is common to see patients coming to the clinic holding cold water or holding cold water in their mouth to help alleviate the pain. For this type of acute suppurative pulpitis, the initial treatment should involve opening the pulp to relieve pressure. After the pressure is relieved, a devitalizing agent is used to devitalize the tissue, which is commonly referred to as "killing the nerve." Once the nerve is dead, the pulp tissue loses its sensory function, and the intensity of the pain will be alleviated.