Lecture 3: Dermatology I Flashcards
what this
demodex
label 1-10
- Vertical canal
- Auricular cartilage
- Horizontal canal
- Tympanic membrane
- Middle ear cavity
- Tympanic bulla
- Auditory tube
- Cochlea
- Auditory ossicles
- Temporalis muscle
what this
otoscope
tympanic membrane identify A-C
A. Pars flaccida
B. Pars tensa
C. Stria mellearis
stria mallearis attachment of the __ to __
malleus to tympanic membrane
stria mallearis is origin of __
epithelial migration
what are primary lesions
occur spontaneously as a result of underlying disease
What are secondary lesions
occur as a result of “evolution” of primary lesions and as a result of external forces (trauma)
what are our primary lesions
- Macule or patch
- Papule or plaque
- Pustule
- Vesicle or bulla
- Wheal
- Nodule
- Tumor or cyst
what are our secondary lesions
- Epidermal collarette
- Scar
- Excoriation
- Erosion or ulcer
- Fissure
- Lichenification
- Callus
what are some lesions that can be primary or secondary
alopecia, scale, crust, follicular casts, comedomes, pigmentary changes
what these
Papules- small elevation of skin
how big are papules
<1cm
what are papules associated with
allergies, pyoderma
what this
plaque
how big are plaques
> 1cm, flat topped elevation of skin
what this
ulcerative plaque
What this
pustules
what are pustules associated with
pyoderma or pemphigus foliaceous
What this
nodule- solid elevation of tissue >1cm
what do nodules occur from
infiltrates of inflammatory or neoplastic cells
what this and what is this condition in cats called
macules- circumscribed change in color that is flat
Feline lentigo complex
what is difference between macule and patch
patch >1cm
what is a vesicle
small, superficial, circumscribe elevation of skin that contains serous fluid
what is a bulla
vesicle >0.5cm
what these
wheals/hives
What these
comedones/blackhead- dilated hair follicle devoid of hair and plugged with keratinous debris
What these
follicular casts- accumulation of keratinous debris around hair shaft
what these
scales/dandruff- accumulation of loose cornified fragments of epidermis
what These
crusts- dried exudate on skin surface, either serum, blood or pus or combination
what this
Erosion- break in epidermis that does not penetrate basement membrane
what is excoriation
erosion or ulceration caused by scratching, biting or rubbing
what this
Ulcer- break in epidermis that penetrates basement membrane
What this
scar- area of fibrous tissue replacing damaged skin
what this
Lichenification- accentuation of skin markings giving an elephant skin appearance, thickening of epidermis
What is leukotrichia
loss of hair pigment
what pigment change
Leukotrichia
describe this pigment change
hyerpigmentation
what this
epidermal collarette- circular lesion with circular rim of scale and or a peeling edge
epidermal collarette are footprints of __ or __ lesion
vesicular or pustular
what are epidermal collarette common in
pyoderma
dog elbow- what this
callus- thickened or hardened part of skin or soft tissue, especially area subjected to friction
describe lesions
crusts- yellow/serous
Alopecia
Erythema
Hypopigmentation
describe lesions
erythema, scales, depigmentation
describe lesions
erosion, alopecia, crusts
describe lesions
pustules, papules—> plaques
describe lesions
scales, alopecia, erythema, erosions, crusts
