Dermatology Flashcards
Name 1 parasite involved in ROSACEA
Demodex follicullorum
Define impetigo
Superficial , pastular skin infection mainly seen in children with oozing, crusting and draining of the lesion . They have golden or yellow appearance
Organisms for impetigo ?
Group A beta hemolytic streptococcus
S.aureus
What is the ttt for impetigo
Throughyly hand washing(to prevent the spread) Topical antibiotics (mupirocin) Oral antibiotics (clindamycin,cephalexin,dicloxacillin)
Define erysipalas
Bacterial infection of a deeper layer than impetigo which involves the dermis and the epidermis
Organism of eryisepalas ?
Group A strep (pyogens)
Clinical picture of erysipelas ?
Bilateral shiny red ,indurated erythematous tender lesion on the face , arms and legs. Lesions are sharply demarcated from normal skin . It can cause fever,chills and bacteremia because it involves lymphatic channels
Define cellulitis
Bacterial infection of dermis and subcutaneous tissue with staph , stre
Cellulitis organisms ?
Streptococcus and staphaures
Clinical picture of cellulitis
Redness , swelling , warmth and tenderness of the skin involves the legs more than arms
Define folliculitis
It’s a superficial infection around a hair follicle caused by staph,pseudomonas
Define furuncle
Small collection of infected material around hair follicle
Define carbuncle
Several furuncle become confluent into a single lesion and form sinus (localized skin abscess)
What’s the ttt for foliculitis
Warm compress no need for antibiotics but if required >mupirocin
Ttt for furuncle ?
Antibiotics Cephalixin,dicloxacillin,
Ttt for carbuncle
Intravenous antibiotics (dicloxacillin , cephalexin) + might need surgical drainage
Define toxic shock syndrome
It’s a systemic reaction to a toxin produced by staph.A attached to foreign body which acts as a superantigen and causes Tcell activation and release of large amounts of cytokines
What are the sx of toxic shock syndrome ?
Fever Diffuse myalgia Vomiting Diarrhea Hypotension Diffuse macular erythrodermal similar to sun burn
Define poikiloderma
It’s a combination of atrophy, reticulate hyperpigmentation and telengectasia
Define horn
Keratin projection that is taller than its broad
Define telengectasia
Visible dilation of small cutaneous blood vessels
Define comedo
It’s a plug of greasy keratin wedge in a dilated pilosabacious orifice
Open comedons are black heads and closed comedons are white heads
Define burrow
Linear papule with some scaling caused by scabbed mite
Echymosis def ?
Large extravasation of blood into skin or deeper structure
