Derm Terms Flashcards
A flat, non-palpable, irregularly shaped macule greater than 1 cm in diameter describes what?
A patch
Flat, circumscribed area of color change less than 1 cm in diameter describes what?
Macule
What are the differences between a macule and a patch?
Macule
* smaller in size (< 1cm)
* circumscribed shape
* color change (?)
A patch is
* greater in size (> 1cm)
*Has color that differs from surrounding skin
* irregular in shape
An elevated, firm, circumscribed area less than 1 cm in diameter describes what?
A Papule
An elevated firm, rough, lesion with flat top greater than 1 cm in diameter describes what?
Plaque
Elevated, circumscribed, superficial fluid-filled (clear/serous). Less than 1 cm.
Vesicle
Elevated, superficial lesion. Similar to a vesicle but filled with purulent fluid describes what?
Pustule
Vesicle greater than 1 cm
Bulla
An elevated, irregularly-shaped area of cutaneous edema. Solid, transient and variable diameter.
Wheal (Hive)
Elevated, firm, circumscribed lesion; deeper in the dermis than a papule. 1-2 cm in diameter.
Nodule
Elevated and solid lesion; may or may not be clearly demarcated; deep in dermis. Greater than 2 cm.
Tumor (Mass)
Encapsulated lesion in the dermis or hypodermis; filled with liquid or semi-solid material.
Cyst
Fine, irregular, red line produced by capillary dilation
Telangiectasia
What are the primary skin lesions?
- Macule
- Patch
- Papule
- Plaque
- Vesicle
- Pustule
- Bulla
- Wheal (Hive)
- Nodule
- Tumor (mass)
- Cyst
- Telangiectasia
What are secondary skin lesions?
- They evolve from primary lesions or develop as a consequence of the patients actions, the can be secondary to trauma or infection
How can secondary skin lesions be categorized?
- accumulation of material
- changing in skin integrity, or thickness
- loss of layers or skin breakdown
What is an examples of secondary skin lesions that result from accumulation of material?
- Scales
- Lichenification
- Crust
Loose or adherent flake composed of stratum corneum cells describes what?
Scales
What are some examples of scales?
- Psoriasis
- Seborrheic Dermatitis
Rough & thickened epidermis secondary to persistent rubbing, itching, or irritation. Accentuation of skin markings is often seen in what?
Lichenification
Lichenification examples
- Chronic Dermatitis
- Atopic Dermatitis
Dried serum, blood, or purulent exudates; slightly elevated
Crust
Crust examples
- Scabs
- Impetigo
benign, well-demarcated, and elevated lesions that have a “stuck-on appearance.”
