Integumentary system (part 4)

list the vesiculobullous disorders

impetigo, herpes simplex, varicella, herpes zoster, erythema multiforme, dyshidrosis

describe the presentation of impetigo

erythematous papules that have honey-colored crust. Highly contagious, caused by staph

describe presentation of herpes simplex

cluster of multiple vesicles - painful erosion of the vesicle with ulcer formation

what is the hallmark of varicella

lesions present and in all stages simultaneously

list the stages of varicella

red papule --> vesicle --> pustule --> ulceration --> crusted lesion

what two disorders are caused by the varicella zoster virus

herpes zoster (shingles)

varicella (chicken pox)

what is the hallmark for shingles

presents along a dermatome and is usually unilateral

herpes zoster

viral disease affecting the peripheral nerves, characterized by painful blisters that spread over the skin following the affected nerves, usually unilateral; also known as shingles

describe the presentation of erythema multiforme minor

flat, reddened macules and/or plaques. Lesions may have a target appearance or the bull's-shaped lesions with 3 zones of color

what can the erythema multiforme minor lesions progress to

vesicles or bulla

what causes erythema multiforme minor

herpes virus

what causes erythema multiforme major

infection like herpes virus or mycoplasma

or response to medicine

what lab changes might you see in a patient with erythema multiforme

decreased WBC and RBC

Increased sed rate, BUN and creatinine

what is dyshidrosis

vesicular disorder that typically affects the hands and feet

what is dyshidrosis associated with

excessive moisture or sweating of the hands/feet

small vesicles that itch and burn which crust over

list the inflammatory disorders

acne vulgaris, rosacea, cellulitis, boil/abscess, folliculitis

what are the 4 components of rosacea

facial flushing, papules or pustules, rhinophyma, dry eyes

how can rosacea be differentiated from acne

no comdeones present

what usually causes boils or abscesses

staphylococcal infections of hair follicles or sebaceous glands

what typically causes cellulitis

staph or strep infections

what is folliculitis

inflammation of hair follicles, typically associated with staph

list the types of hyperplasia disorders

verruca (warts), corns & calluses, molluscum, skin tag, epidermal inclusion cyst

what is the difference between a corn and a callus

callus is thick skin with indistinct borders, painless

corn has distinct borders and is painful

true/false: molluscum is contagious

true

describe molluscum

white or flesh-colored firm dome-shaped papule with a small dimple center

describe epidermal inclusion cysts

lesions with a cheesy discharge and a foul odor

nodular and firm

subcutaneous lesions and tender

what is tinea pedis

fungal infection on the soles of the feet and webs of the toes. scaly rash with maceration

what is tinea capitis

fungal infection that invades the hair shaft causing breakage

what is tinea corporis

ringworm found on non-hairy extremities and trunk

annular lesion with scaling and central clearing with well defined borders

what will a tick bite that is affected by lyme disease or rocky mountain spotted fever be marked by

round target-like lesion