Integument: Acute Conditions Flashcards
infectious
bacterial: boils, impetigo, infected hair follicles
fungal: ringworm, athlete’s foot, jock itch, nail infection
parasitic: ticks, mites, lice
viral: cold sores, fever blisters (herpes simplex), chicken pox, warts (HPV til proven otherwise), shingles (herpes zoster), measles (rubeola), german measles (rubella)
inflammatory
injury from sun exposure combo of overactive glands, increased hormones, infection (acne, rosacea) disorders w/ itching cracking/discomfort: atropic dermatitis contact dermatits seborrheic dermatitis stasis dermatitis psoriasis
bacterial skin infections
occur when break in skin’s defenses
most common: staphylococcus, streptococcus
many mild/slef-lmiting
serious = deep/systemic (require oral/parenteral ABX)
fungal skin infections
tinea pedis (athlete's foot) tinea cruris (jock itch) tinea capitis (ringworm of scalp) tinea unguium (nails ) TX w/ opical antifungals in immunocompromised patients = serious (require oral/parenteral antifungals)
viral skin infections
child hood: varicella, rubeola, rubella (koplik spots in mouth)
adult: (erpes zoster (shingles) herpes simplex (cold sores/genital lesions)
TX: topical/oral antiviral therapy w/ acyclovir
cellulitis
diffuse painful inflam of skin/subcutaneous layers
break in skin from injury
most common from: streptococcus/staphylococcus MRSA
cellulitis RF
athletes children residents of long-term care facilities IV drug users prior MRSA exposure
cellulitis s/s
painful, red, swollen area of skin hot tender to touch fever & chills vesicles, bullae, plaques (w/ staphylococcus) tachycardia hypotension confusion headache lymphadenitis lymphangitis
cellulitis DX
physical exam
cultures
blood tests
cellulitis TX
manage/prevent spread of infection
topical/oral/IV ABX
pain meds
teaching: TX/prevention
impetigo
acute highly contagious skin infection nonbullous impetigo (impetigo contagiosa) [smaller blisters] vs bullous impetigo [large blisters]
impetigo etiology
group A strep & staphylococcus aureus (staph)
enter skin > create pus-filled blister that bursts and leaves crust
colinization ^ by high temp, humidity, preexisting skin disorders, young age and recent ABX use
transmission is rapid, must be treated quickly
impetigo s/s
red pimples
fluid-filled blisters
oozing rash w/ yellow crusts (honey-crusted lesions)
bacteria live under crust/in blisters
impetigo DX and TX
physical exam, culture
TX: prescription ointments, oral ABX, teaching
folliculitis
inflammation of hair follicle
can be infectious (bac/virus/fungi/parasite)
noninfectious (trauma, inflamm, damaged/blocked follicles) or autoimmune
folliculitis s/s
puritus
burning
mild discomfort
multiple, small papules/pustules w/ a red base around hair follicle, break/crust over
folliculitis DX/TX
based on s/s
TX depends on etiology
furuncles
boil
extension of folliculitis or infection of sebaceous gland
carbuncle
cluster of infected hair follicles
furnucles/carbuncle patho
primary S. aureous & MRSA
F: infection spreads down hair shaft thru follicle and into dermis
C: cluster coalesces to form lesion filled w/ pus, dead tissue, fluid
furuncles & carbuncles s/s
area firm/red/painful
tips white
purulent drainage
furuncles & carbuncles DX/TX
exam, culture TX: moist head oral ABX incision/drainage hygiene
candidiasis
infection of skin/mucous membranes with any species of candida
mouth, throat, lungs, vagina, folds of skin, bowel
usually secondary condition
candida is normal but warmth/moisture/breaks in epidermis can cause infection
life-threatening if in bloodstream
candidiasis s/s
thrush: white covering tongue, mouth, throat
vaginal: itching, foul odor, white discharge
balanitis: flattened pustules, edema, burning, tenderness
diaper rash: dark red patches in skin folds, fluid-filled spots
candidiasis Dx/Tx
physical exam skin scraping
antifungal drugs
tinea
ringworm contagious (different types of fungi) superficial infections (dermatophytoses) named by location on body spread by direct contact thrive in warm, damp environments
tinea s/s
scaly plaque with erythema crust papules vesicles bullae
tinea DX
skin scrapings fungal culture polymerase chain reaction assay skin biopsy wood light exam
tinea TX
OTC
prescription meds
contact dermaitis
inflam/irritation of skin (hypersensitivity response)
caused by contact w/ irirtant or allergen
irritants 80% of cases, allergic (immune response)
contact dermatitis s/s (irritant vs allergic)
irritant: hyperemia, itching, skin lesions, vesicular/pustular skin eruptions, itching
allergic: weeping vesicles, hives, itching
contact dermatitis DX/TX
full exam/history “use” test, skin biopsy
TX: avoidance of cause, OTC meds, home remedies, witch hazel cream, st. John’s wort
seborrheic dermatitis
chronic skin inflam w/ exacerbations and remissions
papulosquamous disorder on sebum glands
seborrheic dermatitis s/s
rounded/irregular/circular lesions w/ yellow/brown-gray greasy scales
itching
seborrheic dermatitis DX/TX
skin biopsy, fungal culture
TX: ketoconazole, naftifine, ciclopirox creams, gels
calcineurin inhibitors, sulfur or sulfonamide combos, propylene glycol