A toothache is a pain in or around a tooth, often caused by dental issues such as cavities, gum disease, or tooth injury. The pain can vary from sharp and sudden to dull and persistent. It may also be accompanied by swelling, sensitivity to hot or cold, and difficulty chewing. Toothaches can affect anyone, regardless of age, and may require treatment from a dentist. Over-the-counter pain relievers can help alleviate discomfort temporarily, but it is important to address the underlying cause to prevent further complications. Regular dental check-ups can help maintain oral health and prevent toothaches.