Parasitic Skin Disease Flashcards
What are the skin parasites affecting small animals?
Demodex canis Sarcoptes scabei Cheyletiella spp. Trombicula autumnalis Fleas
What are the clinical signs of trombiculiasis?
Seasonal between July and Sept
Asymptomatic through to severely pruritic
What is the treatment for trombiculiasis?
Fipronil
In what species in cheyletiellosis seen?
Cats, dogs and rabbits
What are the clinical sings of cheyletiellosis?
Scaling
Pruritus in the dorsal trunk
Millary dermatitis in cats
What is the treatment for cheyletiellosis?
Often difficult! >6weeks!
Dog: amitraz, fipronil, moxidectin, ivermectin, selenium shampoo
Cat: fipronil, selamectin, moxidectin, ivermectin, selenium shampoo
Rabbit: ivermectin
What is demodecosis?
An inflammatory parasitic skin disease characterised by the presence of larger than normal numbers in demodectic mites.
What are the typical manifestations of demodecosis?
- Juvenile onset, localised - often recovers spontaneously
- Juvenile onset, generalised - inherited predisposition
- Adult onset, localised or generalised - >2 years old usually with underlying immunosuppression
What is the treatment for demodecosis?
Minimum 12 weeks treatment, monitor by clinical exam, scapes/plucks and avoid steroids!
Describe sarcoptic mange…
An intensely pruritic transmissible infestation of dogs caused by Sarcoptes scabei. Also rarely seen in cats with immunosupression and very rare and notifiable in horses.
By what mechanisms does ectoparasite hypersensitivity ensue?
Multiple - IgE mediated delayed cell mediated.
What are the typically predispositions for FAD?
Age of onset 3-5
Breeds
Atopy canine
How would you diagnose FAD?
History and signs
Presence of fleas or faeces
Response to therapy
Allergy testin
How would you treat FAD?
Flea control regiment Anti pruritic/inflammatory medication - Steriods - Antihistamines Immunotherapy
