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39 Cards in this Set
- Front
- Back
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history questions to ask of skin lesions
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when did it start?
is it itching? Where on the body did it start? Has it spread? Previous treatment? What makes it better/worse? |
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Types of Primary Skin Lesions
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Macule
Papule Nodule Plaque Wheal Vesicle-Bulla Pustule Cyst |
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Types of Secondary Skin Lesions
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Erosions
Fissures Atrophy Ulcer Crusts Desquamation Excoriations Scar |
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Macule
(Description) |
Flat and of any color
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Papule
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Contained within epidermis
Not deep Usually have more mobility than things in dermis |
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Nodule
(Description) |
extends into dermins
deep under skin |
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Plaque
(Description) |
elevated lesion usually like a plateau
Has step off lesion to skin Can be thickened skin Possibly number of papules that come together as a plaque |
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Lichenification
(Description) |
Thickening of skin secondary to scratching
Usually occurs on inside of ankle |
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Wheal
(Description) |
Fluid inside of skin causing thickening of the skin
Usually has reddish border, mirgratory (Not a blister) |
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Wheal
(when to biopsy) |
Any wheal that doesn't move from it's original location within 24-48 hours
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Dermatographism
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Type of wheal
Skin is hypersensitive to trauma (scratching) Very itchy, needs topical steroid to relieve itching |
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Vesicle
(Description) |
"blisters"
Less than 5 mm Small fluid filled area where the fluid is IN a layer of skin |
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Bulla
(Description) |
"blister"
Greater than 5 mm |
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Pustule
(Description) |
purulent filled vessicles
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Cyst
(Description) |
Deeper in skin; walled off
Different types based on where they are; where they arise; can't tell what type it is until after biopsy Firm lesion under the skin |
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Erosion
(Description) |
removal of just the epidermis (from scratching)
Will not scar Must go into dermis to form a scar |
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Fissure
(Description) |
Occurs on corners of lips, body fold areas, heels, between fingers
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Atrophy
(Description) |
Thinning of the skin
Tip off -- Increased vascular markings |
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Ulcer
(Description) |
Extend into dermis but can go down into bone
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Crust
(Description) |
Dried material on a lesion
Honey colored crust = serous fluid Greenish-yellow crust = purulent d/c that dried over lesion |
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Desquamation
(Description) |
Increased turn over of the skin caused by an underlying condition
(Dandruff) |
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Excoriation
(Description) |
Erosions and ulcers from scratching
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Shapes of lesions
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Annular
Iris Arciform Linear Round Oval Ash-leaf Umbilicated Nummular Discoid Serpiginous |
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Annular lesion
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Lesion with ring and central clearing
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Iris or Targetoid
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Not very common
Looks like a bullseye |
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Linear lesion
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Straight line
Either infectious or contact |
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Round lesion
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Usually a plaque
No central clearing |
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Oval lesion
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Same as annular but they are oval
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Ash-leaf lesion
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Only in ONE disease
"Tuberous Sclerosis" Seen in kids -- no pigment in lesion |
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Umbilicated lesion
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Has a "belly button" in middle of lesion
VERY Common |
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Nummular lesion
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Coin lesions
Small lesions |
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Discoid lesion
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Lesion with red border and marked atrophy in the middle
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Serpiginous lesion
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"snake-like" borders
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Arrangement of Multiple Lesions
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Isolated
Scattered Grouped |
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Types of Grouped Lesions
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Herpetiform
Zosteriform Annular Arciform Linear |
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Herpitiform lesions
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lesions that are grouped vesicles on an erythatamous area
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Zosteriform lesions
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vesicles that track along a dermatome
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Characteristics of Lesions
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Color
Consistency and feel of lesion anatomic component of skin affected |
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Special techniques used in clinical exam
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Magnification with hand lens
Oblique lighting Subdued lighting Wood's lamp Diascopy Acetowhitening Dermoscopy |
