Cutaneous infections

Question 1

2 big bacteria and what they cause

Answer 1

Staph. A
- impetago
- furuncles
- carbuncles
- folliculitis
- cellulitis
- peronycia
Strep
- impetigo
- erysipelas
- cellulitis

Question 2

what is impettago

Answer 2

• common and supeficial
• very contagieous
• face of children

Question 3

Tx for impetigo

Answer 3

• swab for C+S
• saline compress to remove crust
• bactroban topical

Question 4

what is a furuncle

Answer 4

• boil - deep follicular abscess
• painful, red nodule that may suppurate
• S. Aureus

Question 5

Tx

Answer 5

• C+S
• bloods if febrile
• incise and drain
• PO ABx if systemic

Question 6

what is superficial folliculitis

Answer 6

• superficial yellow-white pustules with follicular openings
• dev. in crops and heal quickly
• Staph
• anti-bacterial wash

Question 7

what is cellulits

Answer 7

• infection of subcutaneous tissue
• often due to trauma - tinea pedis common
• expanding erethyma, mild edema, tenderness

Question 8

what is Tx for cellulitis

Answer 8

• C+S

- IV pen or 1st gen ceph

Question 9

what is paronychia

Answer 9

• inflammatory reaction of the nail fold
• purulent and swollen nail fold
• incise and drain with PO ABx

Question 10

what is erysipelas

Answer 10

• st. anthony’s fire -PAIN
• expanding painful swelling across face
• infection of the superficial lymphatics
• strep
• ## fever and mailaise

Question 11

Tx of eryse

Answer 11

• mild with cloxavillin

- is severe admit for IV ABx

Question 12

3 main types of viral infections

Answer 12

1. herpes
   - herpes simplex
   - varicella
2. HPV
3. molluscum

Question 13

presentation of herpes

Answer 13

grouped vesicles on an erythemaous base

Question 14

what is HSV1

Answer 14

• cold sores
• grouped vesicles on the lips near the vermillion
• prodrome of up to 24 hours

Question 15

Tx of HSV1

Answer 15

• prevent triggers

- oral anti-virals BEFORE they appear, or little effect

Question 16

2 other presentations for HSV1

Answer 16

1. herpetic whitlow - finger
2. keratoconjunctivitis - may lead to blindness
   - NO STEROIDS

Question 17

what is HSV2

Answer 17

• genital herpes
• all persons with our without Sx are infectious
• can have no Sx
• can be bad blisters for 10-14 days

Question 18

Tx of HSV2

Answer 18

primary - oral antivirals at onset

recurrent - suppresvie daily oral antivrial

Question 19

what is presentation of varicella

Answer 19

• chicken pox
• crops of vesicles, pustules, crusted erosions on a red base
• low grade fever, malaise

Question 20

Tx of varicella

Answer 20

• oral acyclovir if within 24hours

- avoid ASA

Question 21

what is zoster

Answer 21

• shingles
• VZV travels down the nerve where it has been dormant
• pain and blisters on the dermatome

Question 22

Tx of zoster

Answer 22

anti-virals if given within 72 hours of rash onset

Question 23

what are veruca

Answer 23

warts

Question 24

types of warts

Answer 24

vulgaris - hands - tiny black dots
plana - flat - often on face and neck
plantar - foot in horny ring
genital - most common STD

Question 25

Tx of non-genital warts

Answer 25

• none
• cryotherapy
• salycilic acid
• etc

Question 26

Tx of genital warts

Answer 26

• cryotherapy
• imiquimod cream
• check of STIs

Question 27

what is molluscum

Answer 27

caused by pox virus

- smooth, dome shaped, with central umbilication

Question 28

Tx of molluscum

Answer 28

• none - will go away

- topical tretinoin

Question 29

what is tinea capitis

Answer 29

• breakage of the hair
• triad of: alopecia, scaling, lymphadenopathy
• more common in children before puberty

Question 30

Tx of tinea capitis

Answer 30

oral anti fungals

Question 31

what are dermatophytoses

Answer 31

• fungal organisms that eat keratin
• named for where they are
• annular lesiona with scale at advancing border

Question 32

what is onychomycosis

Answer 32

• fungal infection of the nail

Question 33

what is tinea versicolor

Answer 33

• caused by species of yeast
• normal skin inhabitant!
• spagetti and meatballs on patho