RT Book, Section A1 Zafren, Ken A1 Thurman, R. Jason A1 Jones, Ian D. A2 Knoop, Kevin J. A2 Stack, Lawrence B. A2 Storrow, Alan B. A2 Thurman, R. Jason SR Print(0) ID 1181050997 T1 Ticks T2 The Atlas of Emergency Medicine, 5e YR 2021 FD 2021 PB McGraw-Hill PP New York, NY SN 9781260134940 LK accessmedicine.mhmedical.com/content.aspx?aid=1181050997 RD 2024/03/28 AB Ticks are blood-sucking parasites of people and animals. Ticks cause illness by acting as vectors for pathogens or by secreting toxins or venoms. Ticks carry more types of infectious pathogens than any other arthropods except mosquitoes. The most important pathogens include Borrelia (responsible for Lyme disease and relapsing fever), Rickettsia, including Rocky Mountain spotted fever (RMSF), Ehrlichia (ehrlichiosis), viral pathogens, such as Colorado tick fever, and babesiosis. Rashes are prominent in Lyme disease, RMSF, and southern tick-associated rash illness (STARI), sometimes present in relapsing fever, uncommon in Colorado tick fever, and absent in babesiosis.