Dermatology

Question 1

Name 1 parasite involved in ROSACEA

Answer 1

Demodex follicullorum

Question 2

Define impetigo

Answer 2

Superficial , pastular skin infection mainly seen in children with oozing, crusting and draining of the lesion . They have golden or yellow appearance

Question 3

Organisms for impetigo ?

Answer 3

Group A beta hemolytic streptococcus

S.aureus

Question 4

What is the ttt for impetigo

Answer 4

Throughyly hand washing(to prevent the spread)
Topical antibiotics (mupirocin)
Oral antibiotics (clindamycin,cephalexin,dicloxacillin)

Question 5

Define erysipalas

Answer 5

Bacterial infection of a deeper layer than impetigo which involves the dermis and the epidermis

Question 6

Organism of eryisepalas ?

Answer 6

Group A strep (pyogens)

Question 7

Clinical picture of erysipelas ?

Answer 7

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

Question 8

Define cellulitis

Answer 8

Bacterial infection of dermis and subcutaneous tissue with staph , stre

Question 9

Cellulitis organisms ?

Answer 9

Streptococcus and staphaures

Question 10

Clinical picture of cellulitis

Answer 10

Redness , swelling , warmth and tenderness of the skin involves the legs more than arms

Question 11

Define folliculitis

Answer 11

It’s a superficial infection around a hair follicle caused by staph,pseudomonas

Question 12

Define furuncle

Answer 12

Small collection of infected material around hair follicle

Question 13

Define carbuncle

Answer 13

Several furuncle become confluent into a single lesion and form sinus (localized skin abscess)

Question 14

What’s the ttt for foliculitis

Answer 14

Warm compress no need for antibiotics but if required >mupirocin

Question 15

Ttt for furuncle ?

Answer 15

Antibiotics Cephalixin,dicloxacillin,

Question 16

Ttt for carbuncle

Answer 16

Intravenous antibiotics (dicloxacillin , cephalexin) + might need surgical drainage

Question 17

Define toxic shock syndrome

Answer 17

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

Question 18

What are the sx of toxic shock syndrome ?

Answer 18

Fever
Diffuse myalgia
Vomiting 
Diarrhea 
Hypotension 
Diffuse macular erythrodermal similar to sun burn

Question 19

Define poikiloderma

Answer 19

It’s a combination of atrophy, reticulate hyperpigmentation and telengectasia

Question 20

Define horn

Answer 20

Keratin projection that is taller than its broad

Question 21

Define telengectasia

Answer 21

Visible dilation of small cutaneous blood vessels

Question 22

Define comedo

Answer 22

It’s a plug of greasy keratin wedge in a dilated pilosabacious orifice
Open comedons are black heads and closed comedons are white heads

Question 23

Define burrow

Answer 23

Linear papule with some scaling caused by scabbed mite

Question 24

Echymosis def ?

Answer 24

Large extravasation of blood into skin or deeper structure