Review ArticleIdentification of Hard Ticks in the United States: A Practical Guide for Clinicians and PathologistsLaga, Alvaro C. MD, MMSc*; Mather, Thomas N. PhD†,‡; Duhaime, Roland J. MS‡; Granter, Scott R. MD* Author Information *Department of Pathology, Brigham and Women's Hospital, and Harvard Medical School, Boston, MA; †Center for Vector-Borne Disease, University of Rhode Island, Kingston, RI; and ‡TickEncounter Resource Center, University of Rhode Island, Kingston, RI. Correspondence: Alvaro C. Laga, MD, MMSc, 75 Francis Street, Boston, MA 02115 (e-mail: [email protected]). The authors declare no conflicts of interest. The American Journal of Dermatopathology: March 2022 - Volume 44 - Issue 3 - p 163-169 doi: 10.1097/DAD.0000000000002005 Buy Metrics Abstract According to guidelines published by the Infectious Disease Society of America, Lyme disease prophylaxis is possible if a tick can be identified as Ixodes scapularis (nymphal or adult) within 72 hours of tick removal. However, a recent survey of medical practitioners indicates generally poor proficiency in tick identification. In this study, we provide a simple, practical guide to aid medical practitioners in identifying the most commonly encountered human biting ticks of North America. Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.