Diseases of skin Flashcards
skin diseases can be classified by
clinical signs
aetoiology
skin diseases by clinical signs
- Pruritus
- Alopecia
- Nodular diseases
- Scaling and crusting diseases
- Changes of pigmentation
parasitic skin disorders
- Mange (Sarcoptes, Psorptes, Chorioptes)
- Habronema
- Oxyuris equi
- Onchocerca cervicalis ( Nuchal ligament)
- Microfilariae
- Hypersensitivity
- Ivermectin
fungal skin disorders
Dermatophytosis/Ringworm
Histoplasma farciminosum - epizootic lymphagitis
ringworm
o Trichophyton, Microsporum
o Most common
o Contagious, zoonosis
o Papular then crusted, spread circumferentially, alopecia, scaling
o Contact sites
o Culture, biopsy
bacterial skin diseases
- Dermatophilosis/rain scald
- Dermatophilus congolensis
- staph
- strep
viral skin disorders
-EHV-3
- Vesicular stomatitis (Americas)
- Horse pox
- Molluscum contagiosum
allergic skin disorders
- Eosinophil granuloma
- Urticaria
- IBH (insect bite hypersensitivity)
- Food allergy
- Contact allergy
- Drug allergy
- Atopic dermatitis
eosinophilic granuloma
unknown aetiology (collagen degeneration)
lesions
o Multifactoral o IBD o Atopic dermatitis o Trauma
urticaria
aetiology
type I hypersensitivity
o inhaled allergens
o Serum products, blood transfusion
o Antibiotics (drug allergy)
o Food allergy (oat allergy)
o Chronic, purulent (infectious) diseases
o Insect bite (local allergic reaction, +/- anaphylactic reaction)
urticaria
clinical signs
o Within minutes or hours
o Papules, coalescing, wheals, larger oedemas
urticaria
diagnosis
o Sigs + allergen load
o Elimination of allergens (5-7 days)
o Allergic skin tests
urticaria
clinical course
o Usually fast healing
o Purpura haemorrhagica or chronic recurrent allergic dermatitis may develop
insect bite hypersensitivity
sweet itch
- Seasonal
- Pruritus
- Broken mane and tail hair, alopecia
- Erosions, papules, crusts
- Ventral midline dermatitis
drug allergy hypersensitivity
type I, II, III, IV
