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Flashcards in Wk18D1 Rashes Deck (12):
1

Measles Diagnosis
Fever is ___ to rash

3 C's + K (cough, coryza, conjunctivitis, Koplik's spots), Morbilliform rash
prior

2

Rubella (German measles) diagnosis and rash characteristics
Duration?
Is it bad?

Macular rash (face/neck, then spreads)
3-5 days
little systemic illness

3

Varicella (chickenpox) diagnosis
Rash characteristics
Recurs later as __ with __ characteristics

Disseminated vesicular rash after 12-14d incubation
Begins face/trunk, spreads
Herpes zoster (Shingles), dermatomal distribution and acute neuritis

4

Roseola (erythema subitum) diagnosis
Viruses
Transmission

3-5d fever, evanescent macular rash .5-2 yr old
HHV-6/7
parent's kisses

5

Fifth disease (erythema infectiousum)
Virus
Timing of illness/rash
rash appearance
dangerous for...
weird manifestation

Parvo B19
1 d illness, rash after 16-20 d
macular cheek rash
pregnant moms, chronic hemolytic anemia patients
purpuric gloves and socks

6

Enterovirus rashes: seasons
Can look like ___
Hand foot + mouth
herpangina,
molluscum contagiosum

Circulate in summer/fall
anything!
Oral vesicular enanthem
Oral vesicles w/ red areolae, ulcers
Umbillicated papules on trunk

7

Rashes from Bacterial Infections
Erythema migrans
Bacterial vasculitis
Scarlet fever

Borrelia burgdorferi (target)
N. meningitidis, rickettsia form petechiae (systemic)
GAS,Erythmatous macular rash, fine sandpaper feel

8

3 Most common dermatophytoses
Prefer ___
Tinea corporis
Tinea capitis
Tinea cruris, pedis
Tinea unguium

Microsporum, trichophyton, epidermophyton
keratin
smooth skin:ringworm, raised scaly edge, vesicles?
scalp: Adamson's fringe, kerion
jock itch, athlete's foot
nails, chronic

9

Diagnosis of dermatophyte infection can be through ___ prep (maybe with __ to see __) or alternatively with ___ or __

KOH prep with calcifluor white to see chitin
Woods lamp or culture

10

Pityriasis versicolor agent
looks __ or ___ (grossly)
characteristic appearance in culture

Malassezia
hypo-hyperpigmentation
spaghetti and meatballs

11

Erythrasma agent
Areas affected
Rash appearance
Diagnosis uses ___ to differentiate from ___

Corynebacterium minitissimum
Intertriginous areas
Red/brown, macular
Wood's lamp (coral red), Tinea cruris

12

Sporotrichosis (rose-handler's disease)
Agent
Forms subQ ___ that ____ on skin
Look at 37 C culture

Sporothrix schenckii fungus
movable module, suppurates
Cigar shape