Derm PE /approach Flashcards
Steps for Derm DX
Chief complaint
Signalment
Derm history
Previous history
PE
Differential DX
Treatment trial
Narrow differential list
Importance of <6m
Younger than 6m
Juvenile demodicosis
Dermatophytosis
Impetigo (staph)
Juvenile cellulitis
Oral papillomatosis
Age 1-5 importance
Allergic dermatitis (atopic dermatitis)
Alopecia X
Color dilution alopecia
Primary idiopathic seborrhea
Autoimmune dermatoses
> 6 years of age
Hyperadrenocorticism (cushings)
Feminization syndrome (testicular tumor)
Neoplasms
Decubital ulcer
Breed predisposition
Gender in derm DX
Male feminization syndrome - testicular tumors
Circumanal adenomas - almost exclusively in intact males
Color in derm DX
Squamous cell carcinoma in white eared cats
Color dilution alopecia - diluted coat color
Black hair follicular dysplasia - black coats that don’t grow back in = alopecia
Bilateral or symmetrical distribution for DX
Bilateral - hypothyroidism, PF
Asymmetrical - ectoparasites, fungal infections
Primary lesion
Macula or patch
Papule or plaque
Pustule
Vesicle or bulla
Wheal
Nodule
Tumor or cyst
secondary lesion
Epidermal collarette
Scar
Excoriation
Erosion or ulcer
Fissure
Lechenification
Callus
Crust
Lesions that could be primary or secondary
Alopecia
Scale
Follicular cast
Comedone
Hyperpigmentation
Hypopigmentation
Linear configuration of lesions
Scratching, external trauma, involvement of blood or lymphatic vessels, congenital malformation, linear granuloma
Diffuse configuration of lesions
Suggests metabolic or systemic reaction
Endocrine disorders
Keratinization disorders
Immunomediated
Hypersensitivity disorders
Annular lesion configuration
Superficial pyoderma
Dermatophytosis
Dermodicosis
