Dermatology Terminology Flashcards
Macule
Circumscribed change in skin color that is flush with the surrounding skin. Lesion is <1.0 cm in diameter
Ex:
Solar lentigo
Traumatic purpura
Patch
Circumscribed change in skin color that is flush with the surrounding skin. Lesion is ≥1.0 cm in diameter
Ex:
Café au lait spot
Vitiligo
Papule
A solid or cystic elevation <1.0 cm in diameter
Ex:
Acne
Eruptive xanthoma
Nodule
A solid or cystic elevation >1.0 cm but <2.0 cm in diameter
ex:
Dermato-fibroma
Tumor
A solid or cystic elevation >2.0 cm in diameter
Ex:
Follicular cyst
Plaque
An elevated lesion that is >1.0 cm in diameter
Ex:
Psoriasis
Scale
Desiccated, thin plates of cornified epidermal cells that form flakes on the skin surface
Ex:
Ichthyosis
Wheal
Circumscribed, flat-topped, firm elevation of skin with a well-demarcated and palpable margin
Vesicle
Circumscribed, elevated lesion containing clear serous or hemorrhagic fluid that is <1 cm in diameter
Ex:
Contact dermatitis
Herpes simplex
Bulla
Circumscribed, elevated lesion containing clear serous or hemorrhagic fluid that is >1 cm in diameter
Ex:
Bullous pemphigoid
Pustule
A vesicle containing purulent exudate
Ex:
Folliculitis
Atrophy
A depression from the surface of the skin with underlying loss of epidermal or dermal substance
Ex:
Lichen sclerosis et atrophicus
Erosion
A depression from the surface of the skin with a loss of all or part of the epidermis
Ex:
Burn
Erosion - secondary
Can be a secondary lesion
Ex:
Ruptured bulla
Ulceration
A depression from the surface of the skin with a loss of the entire epidermis and at least some of the dermis
Ex:
Ecthyma
Lichenification
Dry, leathery thickening of the skin with exaggerated skin markings
Ex:
Chronic eczema
Scar
An elevated or depressed area of fibrosis of the dermis or subcutaneous tissue resulting from an antecedent destructive process
Ex:
Healing wound
Fissure
A deep linear split in the skin extending through the epidermis
Ex:
Traumatized eczema
Crust
Dried exudates of serum, blood, sebum, or purulent material on the surface of the skin
Ex:
Acute and/or secondarily infected eczema
