Sign Up for a Free Account

This is an image preview.
Start a Free Account
to view the full image.

  • 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.

Ixodes holocyclus tick, female (2)

A female Ixodes holocyclus tick (the so-called Australian paralysis tick) photographed against lined paper for an indication of size. The tick was removed from the coat of a dog that had been in the bush. Photography by AY Arktos (November, 2005) at Batemans Bay, New South Wales, Australia. (Courtesy of Wikimedia Commons. Creative Commons Attribution-ShareAlike 2.5 Generic License.)

Associated Disorders

  • Acute ascending paralysis