Skin under attack Flashcards
Dx?
Molluscum contagiosum
The causative agent of this lesion replicates in:
Nucleus
(Shingles - VZV - herpesviruses are DNA viruses which replicate in the nucleus)
Causative agent?
HPV2
Most likely causative agent?
Trichophytan tonsurans
Test to definitively diagnose the agent of this infection?
Tzank smear
(Herpetic whitlow - look for multinucleated acanthotic keratinocytes)
Two names for this lesion?
Tinea faceis, Ringworm
Causative agent?
Poxvirus
HPV serotype?
HPV1
(Palmoplantar warts)
HPV serotype?
HPV 2,4
Most likely causative agent?
Malassezia
(Tinea versicolor - notice hypopigmentation in round patches)
Dx?
Herpetic whitlow
HPV serotype?
HPV 3,10
(Flat warts)
Unlike this lesion which generally spares the penis and scrotum, ___, ___, and ___ usually will involve the penis and scrotum.
Scabies
Genital herpes
Genital warts
Dx?
Tinea pedis
Most likely causative agent?
Strep
(Erlysipelas)
How does the primary infection with this virus differ from the primary infection with the causative agent of herpes labialis?
HSV2 (genitalis) initial infx = severe, vesicles, fever, lethargy
HSV1 (labialis) initial infx = usually asymptomatic
Dx?
Molluscum
Dx?
Tinea corporis
Dx?
Herpes
(Tzank smear showing multinculeated acanthotic keratinocytes)
Most likely bugs?
Staph aureus, strep pyogenes
What time of year is this infection most common?
Late winter - early spring
Where does this patient most likely live?
Tropical areas
(Tinea versicolor caused by Malasezzia)
Dx?
Oral candidiasis
Dx?
Tinea capitis
Two bugs that may be causing this?
Strep pyogenes or staph auerus
(Folliculitis)
The causative agent of this lesion most likely lives in which skin layer?
Stratum corneum
(Tinea corporis - most superficial fungal infections caused by dermatophytes which eat keratin)
Dx?
Tinea cruris
Dx?
Tinea facia
Dx?
Tinea pedis
How to tell if this is a furuncle or folliculitis?
Furuncle - infx of hair follicle down to subcutis
Folliculitis - superficial infection of hair follicle
Dx?
Tinea versicolor
Why might this patient have developed this infection?
Taking Abx
(Vaginal candidiasis)
Two vaccines used for this virus?
Zostavax, varivax
Two possible diagnoses?
TSS, Kawasaki disease
What infection would this patient have had before this one?
Chickenpox
(Shingles)
In which demographic is this disease common?
Elderly
(Erysipelas)
Dx?
Folliculitis
Dx?
Furuncle
Dx?
Impetigo
Characteristic presentation?
Pain out of proportion to clinical findings
Pathogenesis?
S. auerus antigen against desmoglein
This lesion most likely occured following?
Surgery or deep abscess
