The document discusses the causes and symptoms of toothaches. Common causes include tooth decay, grinding teeth, trauma, gum disease, and abnormal bites. Symptoms can include pain when eating hot or cold foods, swelling around the tooth, pain when biting, foul taste, pain when eating or drinking, and difficulties swallowing or breathing. It is important to see a dentist for diagnosis and treatment, which may include x-rays, medication, or antibiotics. Proper oral hygiene and regular dental visits can help prevent toothaches.