Question | Answer |
superficial skin infections | impetigo, intertrigo |
pyodermas | abscesses, furuncles, carbuncles |
soft tissue infections | cellulitis, erysipelas |
non-specific skin term (doesn't say anything about pathology) | intertrigo, folliculitis |
superficial kind of cellulitis | erysipelas |
bacteria causes almost all types of cellulitis | streptococcus |
pain out of proportion to how lesion looks | necrotizing soft tissue infections (NSTI) |
type of superficial cellulitis, almost always group A strep; sharp, raised borders | erysipelas |
type of intertrigo caused by C. minutissium | erythrasma |
type of NSTI caused by P. aeruginosa | ecthyma gangrenosum |
a deep type of impetigo, is an ulcerative lesion with thick crust that is usually tender | ecthyma |
scabbing eruption, very common in children but adults often infected, | impetigo |
etiologic agents of impetigo | A B-hemolytic streptococcus pyogenes or S. aureus |
predisposing factors for impetigo | truama (minor), underlying dermatoses, poor hygiene, previous antibiotic therapy, warm temps/high humidity |
appearance of impetigo non-bullous | small pustules or vesicles that erode crust (honey-colored), surrounding skin is usually inflammed |
appearance of impetigo bullous | vesicles or bullae containing clear or turbid fluid, surrounding skin can be normal |
topical treatment for impetigo | bactroban (mupirocin), altabax (retapamulin)(MSSA only) |
bacterial causes of intertrigo | groups A and B streptococci, non-diptheroid species of Corynebacterium, P. aeruginosa |
skin on skin can cause | intertrigo |
tend to see satellite lesions with __ caused intertrigo | candida |
bacterial intertrigo __ bad | smells |
patients that have an increased risk of erythrasma, it is bright red w/ woods lamp | diabetics |
topical treatment for erythrasma | benzoyl peroxide, mupirocin, imiadazoles |
neck-fold intertrigo in babies think __ | strep |
dermal ulceration, crust is yellowish-gray and thicker and harder than crust in impetigo, children and elderly at risk | ecthyma |
pyoderma etiology is almost always | S. aureus |
localized, walled off collection of pus, can develop at any cutaneous site, starts as firm nodule that becomes fluctuant | abscess |
deep-seated erythematous nodule, common in hair bearing regions or areas of friction, develop central necrotic plug | furuncle |
large area of coalescing abscesses or furuncles | carbuncle |
gold standard treatment of abscesses, furuncles, and carbuncles | incision and drainage |
when doing an I and D be sure to remove __ or infection will recur | loculations |
adjunctive therapy to I and D | systemic antibiotics and warm compresses |
populations at risk for CA-MRSA | native americans, african americans, homeless, populations in close quarters, incarcerated military recruits, children in daycare, competitive athletes |
cornerstone of CA-MRSA treatment | I and D |
most common soft tissue infections | cellulitis, and erysipelas |
clinical presentation of soft tissue infections | acute, diffuse inflammation of skin, +warmth and tenderness, systemic symptoms not uncommon |
predisposing factors for soft tissue infections | trauma, surgery, mucosal infection, underlying dermatoses, immunologic deficiency |
extends into subcutaneous tissue, borders are often indistinct, | cellulitis |
etiologic agents of cellulitis | GAS, S. aureau |
superficial cellulitis, raised borders with clear demarcation from uninvolved skin. | erysipelas |
etiologic agents responsible for erysipelas | GAS, very rarely S. aureus |
part of the body that is most commonly affected by erysipelas | lower extremity and face |
treatment therapy for cellulitis and erysipelas | penicillinase-resistant synthetic penicillins or cephalosporins. use macrolides ( but not erythromycin) in penicillin allergic patients |
supportive treatment for cellulitis and erysipelas | rest, elevation, warm compresses |
peggy wants us to know about what drug for the treatment of cellulitis and erysipelas. It is very cheap and it works well | dicloxacillin |
common sites of infection for necrotizing soft tissue infections | perineum, extremities, trunk |
predisposing factors for folliculitis | shaving, friction in or occlusion of hair covered areas of the body, immunosuppression, topical corticosteroids |
sites of prediliction for folliculitis | face (especially beard), scalp, neck, legs, trunk, and buttocks |
aka barber's itch | pseudofolliculitis barbae |
keloidal folliculitis is found in what part of the body | nape of neck at hairline |
prevention of infectious folliculitis | antibacterial soaps |
infection of subcutaneous lymphatic channels, usually results from trauma, red streaking from wound | acute lymphangitis |
most common etiology of acute lymphangitis | group A streptococcis, less commonly S. aureus |
gram negative bacteria found in marine animals that inhabit warm bodies of water | vibrio spp |
very rare in the US, usually acquired via contact with infected animals or their products or from feed, soil contaminated with spores of the bacillus | cutaneous anthrax |
systemic tx for erythrasma | doxycycline, macrolides |
systemic treatment for impetigo | cephalosporins, dicloxacillin |