Viral Lesions Flashcards
What is the most common cause of Infectious Exanthems?
Viral
Common culprit: HPV 6 (Parvovirus)
Generalized cutaneous eruption secondary due to an infection
Can be viral, bacterial, rickettsial, parasitic (Viral most common)
Distribution typically generalized
Age <20 years
Prodrome:
Fever
Malaise
NVD
Coryza
Headache
Abdominal pain
Infectious Exanthems
6 months to 4 years
High fever
No rash
Then, as fever subsides, rash develops
Morphology: Diffuse erythema, Macular morbilliform, Vesicular eruptions
Roseola infantum
Hyperkeratotic lesions
Verruca vulgaris and verruca plantaris
Caused by HPV
Transmission is skin-to-skin contact
Duration: Often persist for several years if not treated
Verrucae
What is the common wart called?
Verruca Vulgaris
What is the causative agent of the common wart?
HPV
Often persists several years if not treated
Firm papules 1-10mm (rarely larger)
Hyperkeratotic, clefted surface with vegetations
Characteristic red or brown dots, often called “seeds” (the “seed” = capillaries)
Verruca Vulgaris
Plantar warts are also known as what?
Verruca Plantaris
What is the causative agent of the plantar wart?
HPV
Caused by HPV
Often persists several years if not treated
Early small, shiny, sharply marginated papule localized to feet
Plaque with rough hyperkeratotic surface studded with brown-black dots
Verruca Plantaris
What are some treatment options for Verruca?
Salicyclic acid and lactic acid in collodion
Imiquimod cream 5%
Podofilox 0.5% solution and gel
Co2 laser
Cryosurgery – commonly used
Hyperthermia for verruca plantaris
Duct tape
Self-limited epidermal viral infection
Presents as a round or oval lesions that is umbilicated
Occurs in children and sexually active adults
Skin to skin contact transmission
Persists up to 6 months then undergoes spontaneous regression
Can be see in HIV infected individuals (most commonly on the face)
Molluscum Contagiosum
Papules or nodules
Pearly white or skin-colored
Round, oval, or hemispherical
Characteristic umbilication - Central spot
Can be isolated lesion or multiple
Localized or scattered
Can even present as confluent mosaic plaques
Molluscum Contagiosum
What are some treatment options for molluscum contagiosum?
Supportive - Typically resolve on their own (treatment usually done for cosmetic reasons)
Imiquimod 5%
Tretinoin (Retin-A)
Curettage
cryosurgery
Caused by HPV 6 and 11
Called “genital warts”
Soft, fleshy growths, “cauliflower” lesions that arise from the vulva, vagina, cervix, urethral meatus, perineum and anus (can also be found on the tongue or oral cavity)
Single or multiple
Can be dormant for years
Common in young sexually active adults - Spread by direct, skin to skin contact
There are four clinical types
Condyloma Acuminatum
