![]() If a patient has only non-specific symptoms without any signs of Lyme disease, it is far more likely the cause is something other than Lyme disease. While patients with Lyme disease may have a headache, fatigue, or joint pain, these are extremely common symptoms of many conditions, such as viral infections or even stress. Signs, on the other hand, are objective physical findings-a rash, facial nerve palsy, redness, swelling and/or pain on movement of a joint, for example. Symptoms are subjective-fatigue, pain, muscle or joint aches, headache, or perceived cognitive difficulties, for example. It is important to distinguish between symptoms and signs when considering whether a doctor will test a patient for Lyme disease. People infected with Powassan virus cannot spread it to others, though it may be transmitted through blood transfusions involving blood donated by an infected individual. It’s spread by groundhog ticks, squirrel ticks, and deer ticks, which primarily inhabit the Northeast and upper Midwest of the United States. Powassan virus is a rare, potentially serious infection transmitted to humans via the bite of an infected tick. Rocky Mountain spotted fever is a potentially fatal tick-borne bacterial disease that can be transmitted by the American dog tick, the Rocky Mountain wood tick, and the brown dog tick. It typically causes flu-like symptoms but can cause severe and even fatal disease in older people and in those who are immunocompromised. Lyme disease is caused by the bacterium Borrelia burgdorferi and is transmitted to humans through the bite of infected blacklegged ticks (also known as deer ticks).Īnaplasmosis and ehrlichiosis are two closely related diseases (caused by the bacterium Anaplasma phagocytophilum and Ehrlichia, respectively) that are also transmitted to humans by the bite of an infected tick (a deer tick, in the case of anaplasmosis, or a lone star tick, in the case of ehrlichiosis).īabesiosis is a malaria-like parasite that infects red blood cells. There are several tick-borne diseases that range in severity and symptoms.
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