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
CASE 2:
DOG
Breed: Westie
History: Long history of skin disease, increased eye and facial rubbing
CS: Yellow crusting, thickening and blackening around eye
What is the DDx?
a) Yeast infection
Many skin diseases have predilection sites? True or False?
True
What is the skin disease with these predilection sites in a dog?
a) Ears, eyes, groin, medial thighs, tail, feet
b) Ears, eyes, hocks, elbows, ventrum
a) Allergic skin disease
b) Scabies (Sarcoptic mange), Fox mange
CASE 4:
HORSE
CS: self trauma to tail base but also face
What is the DDX?
-Sweet itch- self trauma could cause secondary bac infection
Management and repellent
-Traumatised head not compatible to sweet itch - another skin disease
