Viliuisk encephalomyelitis is a rare neurological condition that affects individuals living in the Viliuisk region of Siberia. This disease, also known as Viliuisk fever, is caused by a virus that is transmitted through the bite of ticks or consumption of raw meat from infected animals. Symptoms include fever, severe headache, muscle pain, and neurological symptoms such as confusion and paralysis. Synonyms for Viliuisk encephalomyelitis include Viliuisk fever, Viliuisk tick-borne encephalitis, and Siberian tick-borne encephalitis. It is important to note that while the disease is rare, it is very serious and can lead to long-term neurological damage if not properly treated. Individuals living in or traveling to areas where the disease is present should take necessary precautions to prevent tick bites and avoid consuming raw or undercooked meat.