Ticks, Tick paralysis and Tick fever ppt

Ticks and tick paralysis presentation

1. Ticks, Tick paralysis Presenter: Raymond Alinetu

2. Uncommon, noninfectious, neurologic syndrome characterized by acute ataxia progressing to ascending paralysis. It is caused by the salivary neurotoxin of several species of tick (over 40 species) Etiology - Dermacentor variabilis (American dog tick) & D. andersoni (Rocky Mountain wood tick), Amblyomma americanum (Lone Star tick), Ixodes scapularis (black-legged tick) & Ixodes holocyclus (scrub tick) Epidemiology – North America in spring & early summer, children & females Pathophysiology – Si/Sx after 3-7 days, Motor pathways affected with Na flux interruption &/ inhibiting release of Ach.

3. Si/ Sx: fatigue, weakness, ataxia, ascending paralysis, irritability, muscle pain, paresthesia DDx : Guillain-Barre syndrome, botulism, poliomyelitis, myasthenia gravis, and spinal cord lesions, Miller-Fisher syndrome. Dx: Clinical, find the tick & Electromyography – shows variable reduction in the amplitude of compound muscle action potentials Mx: Remove the tick (recovery within hours), supportive, intubate if indicated Prevention: Protective clothing, Permethrin/ diethyl-m-toluamide (DEET)