The Language of Dermatology Flashcards
What features to describe on every lesion
- primary vs. secondary
- color
- margins and shape
- configuration
- location
What are types of primary lesions?
- macule/patch
- papule/plaque
- nodule/tumour
- vesicle/bullae (superficial)
- cysts (deeper)
- pustule (follicular or non-follicular)
Specific kinds include:
- wheals (=hives =uriticaria)
- burrows
- commedones (whiteheads (closed), blackheads (open))
- atrophy
- hypertrophic scar
- keloid
- sclerosis
- petechiae/purpura/ecchymoses
- telangiectasis
- milium
What are types of secondary lesions?
- scale (stratum corneum)
- crust
- excoriation
- lichenification
- maceration
- fissure
- erosion (epidermis only)
- ulcer (dermis)
What is a keloid vs. a hypertrophic scar?
A keloid outgrows its original boundaries, whereas a hypertrophic scar does not. Hypertrophic scars will always present immediately after injury whereas keloids may have a delayed presentation.
Both can be painful and itchy and both are have excess collagen and collagenase activity
What is a wheal and how long does it usually last?
Well circumscribed edema. Each lesion lasts < 24hrs
What is petechiae/purpura/echymoses
Extravasated RBCs…don’t blanche (diascopy
What is a milium?
A small superficial cyst containing keratin
What is lichenification?
An increase in skin lines and creases from chronic rubbing
What is scale?
Accumulation of the stratum corneum
What is maceration?
Raw, wet tissue
What is a pustule and what are different types?
A lesion filled with pus. Non-follicular vs. follicular (follicullitus –>furuncle (deeper in follicle, multiple)–>carbuncle (deeper and coalescing)
