Lyme disease is an infectious disease transmitted to humans by tick bites. This condition is caused by bacteria from the Borrelia family, and early symptoms include fever, headache, and a characteristic skin rash. If left untreated, Lyme disease can lead to severe symptoms and organ damage. There are several synonyms for Lyme disease, including Lyme borreliosis, tick-borne borreliosis, and Lyme arthritis. These synonyms reflect the various symptoms and complications associated with Lyme disease. It is important to seek medical treatment early on if you suspect that you have been exposed to a tick bite or are experiencing any symptoms of Lyme disease.