Defining Skin Lesions Flashcards
Macule
A small <1cm flat lesion that presents with alterations in color tone
Patch
A small larger >5cm flat lesion showing an alteration in color or tone also
larger macule
Papule
A small sharply circumscribed elevated lesion that is usually <1cm in size
Plaque
A small sharply circumscribed elevated lesions that is larger >5cm usually.
a larger papule essentially
Nodule
A soft or solid mass in the dermis and/or subcutaneous fat
Tumor
A large nodule that is localized and palpable of varying of size
Vesicle
A small blister containing transparent fluid
Bulla
A large blister containing transparent fluid
Wheal
An evansecent edematous circumscribed elevated lesion that appear and disappears quickly
- very heavily tied to allergic reactions
Scale
Dry and or greasy fragments of adherent epidermis
Pustule
A sharply circumscribed lesion which contains free pus
Crust
A dry mass of exudate from erosions or ruptured vesicles/pustules consisting of serum, dried blood, scales and pus
Erosion
Well defined partial thickness loss of epidermis
Ulcer
A clearly defined full thickness loss of epidermis that may extend into the subcutis
Scar
Permanent skin change resulting from new formation of CT tissue (fibrosis and collagen) after destruction of epidermis and cutis layers
