Create an account
What are initial eruptions that develop as a direct reflection of underlying disease?
What types of primary lesions exist (8)?
papule, pustule, vesicle, wheal, nodule, macule, tumor, cyst
What type of lesion may occur due to chewing, scratching, trauma etc, the result of infection or evolve from a ___ lesion?
may evolve from primary
What types of secondary lesions are there (7)
epidermal collarette, lichenification, callus, fissure, erosion or ulcer, scar, excoriation
What are common causes of papules in dogs & cats?
dogs - bact skin dz (incl pyoderma) & ectoparasites
cats - less common but hypersensitivity/allergic dermatitis, infected feline acne
less common both dogs & cats: pemphigus & contact reactions
T/F Pustules always indicate bacterial infection.
False. Can be sterile with pemphigus foliaceus - but less common.
What are causes of nodules?
Inflammatory or neoplastic cellular infiltration in the dermis or subcutis
T/F: all macules are hyperpigmented, and erythematous
F - can be hyper or hypo, erythematous or hemorrhagic
Thickening of the skin, characterized by an exaggeration of the normal skin surface markings
Where are fissures found and are they found frequently?
footpads, ear margins, nasal, oral or anal mucocutaneous junctions
Uncommon but with various disease etiologies, including trauma.
Lesions that can be either primary or secondary (7)
alopecia, scale, crust, follicular cast, comedo, pigmentary abnormalities, erythema
Describe the different pigmentary abnormalities (5)
hyper, hypo pigmentation, malanotrichia (excess hair pigment), leukotrichia (lack of hair pigment) leukoderma (nonpigmented skin)
Primary seborrhea, ichthyosis, follicular dysplasia and sebaceous adenitis may cause ____ scale.
Common and non-specific, occurs with many infections and inflammatory conditions ____ scale.
Shape seen with excoriations, external forces, lesions with vessel involvement, some congenital conditions
T/F we often see the original lesion
False - lesions change as they progress - often see footprints of the lesion
What are the 10 parts of history to dx?
Onset of derm prob
Past response to tx
enviornmental & dietary history
other animals/people with problem
any non-derm dz present?
Physical exam - 6 components?
1) good overall PE
2) skin - what lesions present
3) configuration of lesions
4) distribution of lesions
6) painful? - rare
What can be used to assess self-induced alopecia, dermatophytes, ectoparasites, color distribution alopecia, hair dysplasias, hair shaft abnormalities, hair growth stage (anagen vs telogen)?
hair examination (trichography)
What is used to look at cell types as indicators of infection, autoimmune dz, neoplasia, allergy, ectoparasite etc - and sometimes see infectious organisms?
What is necessary to definitively diagnose certain derm conditions?
Biopsy and dermatohistopathology
For unusual or serious dermatoses or suspected autoimmune conditions - test?
biopsy & dermatohistopathology
For suspected dermatoses for which treatment may be dangerous - test?
biopsy & dermatohistopathology
What types of allergy testing are available?
intradermal or skin
in vitro testing - serologic
diet trial for food allergy
patch testing - rare
When are bloodwork and urinalysis helpful?
Cases of endocrinopathy and certain autoimmune conditions. For most derm cases - little diagnostic value
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together