Self Trauma Flashcards
What are the define factors for self trauma?
- ‘Skin manipulating’ behaviour
- Frequency and duration
- Distruption to other behaviour
- Extent of tissue damage - Gross lesions/Hair damage - broken tips of hair
What defining factors of the patient could you access?
- Species, Breed
Eg. Bulldogs - don’t manipulate skin - really bad issue - just lying down - Location of pruritus
- Temperament
- Abnormal spontaneous behaviour in consult (Reflexes)
What are some ‘skin manipulating’ issues?
-Scratching Eg. Air scratching in CKCs -Licking Eg. Overgrooming in cats -Gnawing/Biting/Nibbling -Rolling -Scooting -Head shaking - Grumpiness
How would you refine this problem?
SYSTEM
- Skin (Pruritus/Pain)
- Internal issue (Pruritus/Pain) - cystitis in cats - lick abdomen
- Neurological (Pruritus/Pain) - self manipulation syndrome
- Behaviour/pyschological
What are the skin causes of Pruritus?
- ‘Itch’ receptors at dermo-epidermal junction or basal epidermis
- stimulated by pruritogenic substances
- Inflamm environment
What are the most common pruritic skin diseases?
a) Parasitic diseases:
- Surface Mites (Eg. Cheyletiella)
-Burrowing Mites (Eg. Sarcoptes)
-Trombicula
(Follicular mites)
What are the most common pruritic skin diseases?
a) Microbial infection/overgrowth
-Staphylococci
-Malassezia
(Dermatophytes)
What are the most common pruritic skin diseases?
a) Hypersensitivity disorders
-Flea bite hypersensitivity
- Atopic dermatitis
- Food Hypersensitivity
(Contact dermatitis)
Why do microbial infections cause problems in diagnosis of skin disease?
Secondary microbial infections causes pruritus in non-pruritic skin diseases
Rule out or Control Ectoparasites/Microbial causes first before further differential DDX
What are the less common pruritic skin diseases?
- Cornification/metabolic disorders
- Neoplasia (Epitheliotropic lymphoma, MCT)
- Drug Eruption
What are the top differentials for skin disease in DOGS?
a) Parasitic
b) Microbial
c) Hypersensitivity
a) P- Scabies and other mites
b) M- Staphy (Pyoderma), Malassezia
c) H- FAD, Atopic dermatitis, Food hypersensitivity
What are the top differentials for skin disease in CATS?
a) Parasitic
b) Microbial
c) Hypersensitivity
a) P - Cheyletiella, other mites
b) (M - less commonly - Bac, Malassezia, Dermatophytosis)
c) H- FAD, ‘Atopic dermatitis’, Food hypersensitivity, Eosinophilic plaques
What are the top differentials for skin disease in HORSES?
a) Parasitic
b) Microbial
c) Hypersensitivity
a) P - Chorioptes, other mites
b) M- Staph infection, (Dermatophilus, Dermatophytosis)
c) H - Insect bite hypersensitivity, ‘Atopic dermatitis’
What is Pruritus?
Subjective sensation of itching, provoking the desire to scratch - observe itching episodes
CASE 1:
CAT
Breed: Persian
CS: Black material around nasal folds, eyes, lips and lower jaws
PRESENTED with: Self trauma - rubbing nose and broken whiskers
a) What DDX tests would you do?
b) What is result?
c) What parasite is common in the Persian breed?
a) Culture/ sticky tape strips onto slide
b) Mixed yeast and bac infection (Cocci and rods)c
c) Dermatophytes
