Severe tooth pain may occur due to tooth decay, a cavity infection, gum swelling, an exposed tooth nerve, wisdom tooth problems, or abscess formation. The pain may feel throbbing, sharp, or continuous and can worsen while eating, drinking cold or hot items, or lying down. Sometimes swelling, bad taste, or fever may also occur if infection is present. Pain-relieving medicines such as paracetamol or anti-inflammatory medicines are commonly used for temporary relief, depending on age, stomach condition, kidney health, and other medical problems. Warm saltwater rinses and avoiding very cold, sweet, or hard foods may also help reduce irritation for some time. However, pain medicines usually reduce symptoms temporarily and do not remove the actual dental problem causing the pain. Dental treatment such as filling, root canal treatment, cleaning, or tooth extraction may be needed depending on the cause. Swelling of the face, pus discharge, fever, difficulty opening the mouth, or pain spreading to the jaw may indicate the infection is worsening and may require more urgent dental treatment.