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Dermatology Mayo > Ch 16 Infections > Flashcards

Ch 16 Infections Flashcards

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Dermatology Board Prep flashcards
1
Q

Trichomycosis Folliculari

A

Diptheroids coat axillary hairs

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2
Q

Pitted Keratolysis

A

Diptheroids, sweaty shoes

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3
Q

Erythrasma

A

Diptheroids lead to porphoryn formation and color

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4
Q

Impetigo

A

Staph aureus is bullous desmoglein 1
strep can be nonbullous and lead to glomerulonephritis
if recurrent think of head lice

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5
Q

Ecthyma

A

Ulcer beneath wound/impetigo-full thickness, scar

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6
Q

Furuncle

A

inflamed hair follicle, commonly staph aureus

  • If recurrent expect aureus and maybe MRSA
  • Tx is I&D and Abx
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7
Q

Carbuncle

A
  • Many coalescing furuncles

- Suspect MRSA

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8
Q

SSS

A

Desmoglein 1

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9
Q

Toxic Shock

A

Staph Aureus

-Desquemation of hands and feet

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10
Q

Erysepilis

A

Rapidly expanding and often accompanied by fever

  • Tx is IV peniciln
  • Can be recurrent and commonly in same area, can lead to lymphangitis and obstruction
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11
Q

Nec Facitiis

A
  • Anaerobes and strep
  • Aggressive debridement and IV abx
  • Often presents as anesthetics area and deep infection
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12
Q

Erysepiloid

A

-In fish mongers and buthers

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13
Q

Cat scratch

A

-Granulomatous skin reaction at site and axillary LAD

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14
Q

Meningococcal

A

-Petichiae and Purpura

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15
Q

Syphilis

A

1-painless chancre
2-palms and hands have macular eythema, LAD, Condyloma, Patchy hairliss, mouth ulcers
3-Graunlomas

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16
Q

Yaws

A

Cutaneous Syphilis

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17
Q

Lyme

A
  • Erythema Migrans

- Doxycycline is best, can also use amox

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18
Q

Cutaneous Anthrax

A

Painless ulcer leading to eschar

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19
Q

Gonococcal

A

-Arthritis and papulopustular

20
Q

TB

A

-Can cause lupus vulgaris which is scaly brown patch commonly around head

21
Q

Leprosy

A
  • Transmitted nasally
  • Tuberculoid is contained and often elads to small local hypopigmentation and anesthesia/thickening of nerves, not infectous
  • Lempromatous-Disseminated, leione faces, anesthesia etc
  • Type 1 - Borderline reversal reaction local erythema
  • Type 2 - Lepromatous reversal reaction leading to systemic illness
22
Q

Mycobacteria Marinarum

A
  • Sprothrichoid spreach

- Through water, commonly cleaning fish tank

23
Q

Leishmaniasia

A
  • Discharge and skin reaction
  • Donovani - Kalazar HSM, fever, skin darkening
  • New world: Mucous membrane involvment
24
Q

Warts

A
  • 1,2,4 are common. 3 is plane. 6, 11, 16, 18 are high risk for SCC
  • Mosaic has many smaller ones and are often slower to heal
  • Plantar can be painful and may need exision
  • Be slow with warts and don’t over excise
25
Q

Wart Tx

A

-Topical salicylic etc, then to cryosurgery antigen ingectiosns to exisions last

26
Q

Epidermodysplasia veruciformis

A

-Disseminated HPV

27
Q

Varicella

A
  • Respiratory spread
  • Centrifugal vesicular rash with erythematous base
  • Can treat with acyclovir/valciclovir
  • COmplications are pneumonitis, secondary infection
28
Q

Herpes Zoster

A
  • Reactivation of varicells
  • Treat early in course (5days)
  • Dermatomal, multi think of immunodeficency
29
Q

Herpes Simplex

A

EM May follow

  • Initial and then dormant
  • Vesicular lesions
30
Q

Molluscum

A
  • Pearly white umbilicated papules

- Most common on kids and don’t need to treat, can treat in adults with destruction

31
Q

Orf

A

-Parapox virus from lambs

32
Q

AIDS

A
  • Kaposi Sarcoma, violaceous vascular grwoths
  • Treat less than 200
  • Folliculitis and seb derm from pytorosprum
  • Dry skin and florid infections
33
Q

Kawasaki

A
  • Desquamation of hands and feet, conjunctivitis, strawberry tongue
  • Commonly follows parvovirus infection
34
Q

Gioncotti Crosti

A
  • Symmetrical erythematous papules most common on the face

- Seen with Hep B

35
Q

Herpangina/Hand Foot and Mouth

A

-COxaskie viurs,

_kids have vesicular or eroded/ulcerated lesions

36
Q

Measles

A

-URI and falling rash

37
Q

Rubella

A

-fever and then falling rash

38
Q

FIfths

A

Parvo

39
Q

Dermatophytes

A
  • Trichophyton - Common in hair
  • Microsporum and epidermosproin more common in skin
  • Infect only the stratum corneum, more sever if zoonotic
  • inflammation is from metabolic products
  • Treated with terbenafine and griseofulvin
  • Always get mycological proof before treatment
40
Q

Tinea Pedis/Onychomycosis/Hands

A
  • Commonly rubrum

- Can treat with locals

41
Q

Capitis

A
  • Trichphyton, tonsurans in AA
  • Treat with systemics
  • May cause hair loss or flaking
42
Q

Candida

A
  • Infections usually signal some sort of underlying immunodeficency
  • Oral and angular stomatitis
  • Intertrigo
  • Genital
  • Paronychia
  • Chronic Mucocutaneous
  • Tx is with itraconzaole (not terb/gris), can also use nystatin if topical
43
Q

Pitaryasis Versicolor

A
  • Caused by microsporum and has spaghetti and meatball appearance
  • Fungus
  • Tx with itraconazole because gris/terb don’t work
  • areas of hypopigmentation
44
Q

Fungal

A
  • Histo: Granuloma
  • Cocci: EN
  • Blasto: Veruccous hyperkeratotic
  • Sporptrichs: Lymphatic spread
  • Actinomyces: SUlphur graunles
  • Mycetoma: Foot rot
45
Q

Kerion

A

-Inflamed and bogy tinea infection

46
Q

Tinea Incognito

A

-spreading edge, steroids can hide symptoms

Dermatology Mayo (26 decks)

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