Exam 2 - Skin Flashcards
Erythematous, circumscribed pruritic plaques
Uriticaria
this type of comedo progress to form pustule, red papule, nodule, or cyst
closed
Salmon-colored plaques, covered by silvery scales
Psoriasis
Inflammatory, papulosquamous, pruritic eruption
Seborrheic Dermatitis
Cutaneous lesions consist of itchy, violaceous, flat-topped papules that may coalesce focally to form plaques
Lichen Planus
Staphylococcal infection of an occluded hair follicle
Folliculitis
Superficial blisters that rupture and leave a heavy, yellowish crust. Generally caused by streptococci
Impetigo
Diffuse, spreading erythema and swelling with a sharply defined border
Red streaks of lymphangitis extending to lymph nodes
Commonly caused by streptococcus
Cellulitis
Irregular annular (target-like) lesions with interior clearing and peripheral scale (containing the fungal hyphae)
Dermatophytoses
Pruritic erythematous patches develop in intertriginous (between folds) or other moist areas
Candidiasis (yeast)
Grouped vesicles on an erythematous base
Herpes simplex (HSV)
Small papules form umbilicated vesicles and then crust
Lesions may form pustules that lead to scarring
Varicella (chickenpox)
Painful, grouped papules that rapidly become vesicular
Zoster (shingles)
Various kinds of “warts”
Human papilloma virus (HPV)
Vesicles (fluid-filled raised area 5 mm or less) and bullae (greater than 5 mm) can be either primary or secondary
Vesiculobullous Disorders
Bullous lesions produced by mechanical trauma
Epidermolysis Bullosa
Bullous disease that affects young to middle age adults
Caused by autoantibodies to certain structural components of the epidermis (desmosome)
The mouth is usually affected first, followed by skin lesions of variable severity
Pemphigus
Commonest of the bullous diseases; occurs mainly in the elderly
Autoantibodies are directed against basement membrane/ hemidesmosome
Bullae are generally large, tense, and widely distributed
Bullous Pemphigoid
Chronic sun exposure increases what carconomas?
squamous cell and basal cell carcinomas
Severe blistering sunburns in childhood increase?
nevi and malignant melanomas.
“Stuck on” appearance
Tan to black tumors
May become pruritic, lose their color and increase in size
Seborrheic Keratosis
Roughened red-brown lesions occurring on sun-exposed skin
Actinic (Solar) Keratosis
Actinic Keratosis may progress to what?
invasive squamous cell carcinoma
Indurated (hard) nodular lesions that ulcerate
Squamous Cell Carcinoma
The most common malignant tumor of the skin
Most commonly at the root of the nose and along the scalp line
Basal Cell Carcinoma
Pearly nodule with depressed center and superficial telangiectases (tiny dilated veins).
Basal Cell Carcinoma
Tumors of melanocytes, which protect the skin from ultraviolet radiation by producing melanin pigment
Melanocytic Tumors
Originate at the dermal-epidermal junction
Metastasize by dermal lymphatic vessels
Malignant Melanoma
Asymmetry with irregular borders
Variegated coloration
Large diameter
Elevation from surrounding skin
Malignant Melanoma
