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MTB 2 Flashcards

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Dermatology Board Prep flashcards
1
Q

Presentation of perianal abscess

A

Anal pain
Tender erythematous bulge at anal verge
Superior to anus over coccyx in midline

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2
Q

Erysipelas pathophys

A

Strep infxn (sometimes staph)
Invades dermal lymphatics
Bacteremia, leukocytosis, fever, chills

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3
Q

Presentation of Erysipelas

A

Bright, red hot swollen lesion on face

Leukocytosis

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4
Q

TX for Erysipelas, Cellulitis, Folliculitis, Furuncles, Carbuncles - MILD Dz

A

Oral
Dicloxacillin, cephalexin, cefadroxyl
PCN Allergic: Erythromycin, Clarithromycin, Clindamycin
MRSA: Doxycycline, Clindamycin, TMP/SMZ

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5
Q

Presentation of perianal fistula

A

Chronic and crypt infxn of Crohns
External/cutaneous opening drains purulent material
Win 3 cm of anal margin

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6
Q

TX for Erysipelas, Cellulitis, Folliculitis, Furuncles, Carbuncles - SEVERE Dz

A 
IV 
Oxacillin, nafcillin, cefazolin
PCN Allergic: Clindamycin, Vanco
MRSA: Vanco, Linezolid, Daptomycin, Tigecycline
Anaerobes - Imipenem
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7
Q

What are the Antistaph PCNs

A

OX
CLOX
DICLOX
NAF

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8
Q

Presentation of Cellulitis

A

Skin - warm, red, swollen, tender

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9
Q

Community Acquired MRSA Cellulitis Presentation

A

Purulence = Pus
Abscess
Contact sports, prisoners, Native Americans

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10
Q

Mupirocin MOA

A

Inhibits protein synthesis by reversibly binding to t-RNA synthetase in Staph Auereus and strep

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11
Q

What is molluscum contagiosum

A

Pox Virus

Umbilicated, flesh colored, dome shaped papules on trunk, limbs, anogenital areas

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12
Q

Transmission for molluscum contagiosum

A

Skin to skin

Sexual contact

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13
Q

Presentation of tinea corporis

A

Ring-shaped scaly patches
Central clearing
Distinct bordres
Itching

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14
Q

MCC Tinea corporis

A

Trichophyton rubrum

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15
Q

Presentation of Tinea Versicolor

A

Multiple macules
Vary in color - white to brown, pink
Chest, neck, abdomen, face

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16
Q

Tinea Versicolor cause

A

Malassezia furfur

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17
Q

Malassezia furfur on KOH prep

A

Spaghetti and meatball

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18
Q

TX Malassezia furfur

A

Topical selenium sulfide
Ketoconazole
Clotrimazole
Oral itraconazole

19
Q

Presentation of Vibrio vulnificans

A

Fisherman, Gulf of Mexico
Poorly controlled DM
Cirrhosis
Dark, bullous lesions, wound infxn -> Septicemia

20
Q

TX for Vibrio vulnificans

A 
3rd G Cephalosporins
Ceftriaxone
Cefotaxime
Cefalexin
Ceftazidime
AND 
Doxycycline 
Cipro
21
Q

Best initial test for Fungal skin infxn

A

KOH prep

22
Q

Most accurate test for fungal skin infxn

A

Fungal Culture

23
Q

Best initial TX for fungal skin infxn

A

Topical antifungal

24
Q

Best intial Tx for hair and nail

A

Terbinafine

25
Q

AE of Ketoconazole

A

Antiandrogenic - gynecomastia

Hepatotoxic

26
Q

Best initial test for Candida

A

KOH

27
Q

Most accurate test for Candida

A

Fungal Cultue

28
Q

Best next step in Candida Infxn

A

Topical antifungal

29
Q

AE of terbinafine

A

Hepatotoxic

30
Q

Presentation of morbilliform rash

A

Generalized maculopapular rash that blanches with pressure

31
Q

Presentation of Erythema Multiforme (EM Minor)

A 
Widespread, small, target lesions
Palms and soles
No mucous membrane involved 
Sudden onset
MC after HSV Infxn
32
Q

Presentation of Steven-Johnson Syndrome (EM Major)

A

Involves mucous membranes

Sloughs off resp epithelium -> resp failure

33
Q

TX for Steven-Johnson Syndrome

A

IVIG

34
Q

Presentation of Toxic Epidermal Necrosis

A

Rash with mucous membrane involvement

Nikolsky sign +

35
Q

MCC of death w TEN

A

Sepsis

36
Q

TX for TEN

A

IVIG

37
Q

Presentation of Staph scalded skin syndrome

A

Similar to TEN

38
Q

Presentation of Toxic Shock Syndrome

A 
Skin involvement like SSSS
HypoTN
Renal Dysfnc (Hi BUN/Cr)
Liver Dysfunc
CNS involved 
Fever
Rash - desquamative
Vomiting
39
Q

Management of SSSS and TSS

A 
Supportive care - IVF, Pressors (Dopamine)
Antistaph ABX
- Oxacillin or Nafcillin
- Cefazolin
MRSA
- Vanco
-Linezolid
40
Q

TX for Mild Acne

A
  1. Benzoyl peroxide

2. Topical Abx = Clindamycin, Erythromycin

41
Q

Presentation of Acne

A

Pustules
Cysts
Comedones

42
Q

TX for Moderate Acne

A

Add Topical Vit A derivatives

Oral Abx- minocycline, tetracycline

43
Q

TX for Severe Acne

A

Add Oral Vit A derivatives

Isotretinoin

44
Q

AE of Isotretinoin

A

Hyperlipidemia

Teratogenic

Derm (3 decks)

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