Block 1 Flashcards
(352 cards)
flat cells in the stratum corneum, which have lost nuclei, and lamellated lipids
corneocytes
corium
dermis
where the epidermal appendages, including nails, hair and glands, originate.
dermis
Three important aspects in skin history to seek out
- symptoms attributed to the skin lesion
- chronology of appearance, change, and disappearance of the lesions
- conditions of exposure, injury, or medication that may have induced or altered the disease
In the physical exam of the skin, three categories of observation should be made in sequence:
- anatomic distribution of the lesion 2. configuration of groups of lesions 3. the morphology of the individual lesions
Cardinal Features of skin lesions
Type Shape
Major Characteristics of skin lesions
Color Surface Consistency
First manifestations of the development of the disease
Primary Skin Eruptions
Develop from primary eruptions through transformation, inflammation, regression or healing
Secondary Skin Eruptions
Macule Patch Plaque Papule Nodule Vesicle Bullae Pustule Wheal
Primary Eruptions
Scale Crust Erosion Abrasion Crack Ulcer Scar Atrophy Lichenification
Secondary Eruptions
transitory or persistent change in skin coloration with no change in surface structure or consistency.
Macule
flat lesion greater than 1 cm in diameter
Patch
slightly raised lesion greater than 1 cm in diameter
Plaque
Solid elevations on the skin, up to 1 cm in size
Papule
solid elevations larger than one centimeter
Nodule
transient edema in the corium of light hue and lasting for only a few hours
Wheal
single chambered or multi chambered cavity filled with fluid up to 1 cm in size
Vesicle
fluid filled cavity greater than one centimeter in size
Bullae
eruption which contains a pus-filled cavity visible to the naked eye
Pustule
chronic rubbing leads to thickening of the skin with accentuation of the skin creases
Lichenification
independently scaling particles of corneal cells associated in groups
Scale
deposits which consist of dehydrated secretion, blood or necrotic tissue
Crust
sharply delimited, reddened weeping area from which serous secretion and punctiform hemorrhages are discharged
Excoriations
