Tick Paralysis

Aka: Tick Paralysis, Tick Toxicosis

advertisement

II. Epidemiology

  1. Northwest United States
  2. Peak onset in spring: April to June

III. Pathophysiology

  1. Neurotoxin secretion during tick attachment or feeding via Saliva (non-infectious)
  2. Occurs with Female ticks of several species
    1. Dermacentor (e.g. American Dog Tick, Rocky Mountain Wood Tick)
    2. Amblyomma (e.g. Gulf Coast Tick)
    3. Ixodes

IV. Findings

  1. Acute ascending Flaccid Paralysis
    1. Onset 2-6 days after Tick Bite
  2. Neurologic progression
    1. Difficulty walking or standing
    2. Ataxia
    3. Absent Deep Tendon Reflexes
    4. Drooling
    5. Tachypnea
  3. Girls under age 10 years old may have unique presentations
    1. Ataxia
    2. Weakness without sensory loss
    3. Graham (2011) Pediatr Emerg Care 27(2): 141-7 [PubMed]

V. Differential Diagnosis

  1. Guillain-Barre Syndrome
    1. Tick Paralysis progresses more rapidly than Guillain-Barre Syndrome

VI. Management

  1. Removal of tick is curative (typically within 24 hours)

VII. Prevention

  1. See Prevention of Vector-borne Infection

VIII. Prognosis: Unrecognized infection (tick not removed)

  1. Progresses to Respiratory Failure and death

IX. References

  1. Green and Millsap (2016) Crit Dec Emerg Med 30(1): 4
  2. Pensa and Werner in Swadron (2022) EM:Rap 22(5): 8-12

Images: Related links to external sites (from Bing)

These images are a random sampling from a Bing search on the term "Tick Paralysis." Click on the image (or right click) to open the source website in a new browser window. Search Bing for all related images

Related Studies

Related Topics in Tick-Borne Disease

advertisement