Trixacarus

• Similar to Sarcoptes but half the size

• Causes severe pruritus in laboratory rodents

• Burrowing activity causes biting, scratching and irritation
  • Leads to inflammation, pruritus and alopecia

• Affected areas show acanthosis and hyperkeratosis

• Death can occur within 3-4 months of infection

• Transmission is due to close contact between mother and offspring