Symptoms of Lyme disease can include fever, headache, fatigue, and a characteristic rash. Lyme disease is perhaps the most well-known disease associated with ticks, and is caused by the bacterium Borrelia burgdorferi. Ticks are capable of transmitting a variety of diseases to their hosts through their bite. It then begins to feed on the host's blood. Once a tick has found a host, it crawls to an area where the skin is thin and attaches itself by burying its mouthparts into the skin. Ticks are able to locate their hosts through a variety of mechanisms, including scent, body heat, and carbon dioxide. The length of time a tick feeds varies depending on its life stage and species, but can range from several hours to several days. Ticks require a blood meal at each stage of their life cycle, which they obtain by attaching to a host. The life cycle of a tick consists of four stages: egg, larva, nymph, and adult. They are most active during the warmer months of the year, but can also be active during the winter if the temperatures are mild. Ticks are commonly found in wooded and grassy areas where there is an abundance of hosts, including humans, pets, livestock, and wildlife. They are known to be vectors of many diseases, including Lyme disease, Rocky Mountain spotted fever, and tick-borne encephalitis. Ticks are ectoparasites, which means they live on the outside of their host's body and feed on their blood. There are over 850 known species of ticks worldwide, and they can be found in almost every habitat on Earth. Ticks are small, parasitic arthropods that belong to the family Ixodidae.
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