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  • Nearly 3,000 illustrations, including video clips of neurologic disorders.

  • Every article is reviewed by our esteemed Editorial Board for accuracy and currency.

  • Full spectrum of neurology in 1,200 comprehensive articles.

American dog tick, male

A male American dog tick, Dermacentor variabilis, on a human finger (dorsal view). Photograph by Jerry Kirkhart, Los Osos, California (2009). (Courtesy of Wikimedia Commons. Creative Commons Attribution 2.0 Generic License.)

Associated Disorders

  • Acute ascending paralysis