Cutaneous Infectious Diseases Pics Flashcards
Pityriasis Versicolor
Patches or macules, hyper/hypopigmented, do not tan after sun exposure, dust-like scales, pruritis mild or absent.
Usually on trunk
Malassezia furfur
Impetigo
Bullous
contains clear yellow fluid, yellow crust
positive SSSS
(Staphylococcal Scalded Skin Syndrome)
S. aureus
Tinea Pedis - bullous and ulcerative
dermatophytosis of the feet
interdigital scaling, erosion with pruritis and malodor (athlete’s foot)
superficial white scale in moccasin-type distribution, or can be vesiculo-bullous type
T. rubrum
Folliculitis (axilla)
dome-shaped pustule at opening of hair follicle.
can be bacterial, fungal, viral
(Staphylococcal, Pseudomonas)
Folliculitis - dermatophytic (buttocks)
Trichophyton rubrum
Tinea barbae - fungus
dermatophytosis of beard area (men only)
follicular papules and pustules that can develop into kerion
Candidiasis (cutaneous): intertrigo
“opportunistic yeast infection”
warm, moist areas, sharply demarcated, erythematous patches, SATELLITE LESIONS
Candida albicans
Erysipelas (buttocks)
plaque-like edematous erythema, sharply defined margins
fever, chills, malaise
Beta-hemolytic streptococcus
Tinea corporis - fungus (ring worm)
dermatophytosis of skin
erythematous, scaly plaque that spreads centrifugally as it clears
T. rubrum
Herpes Zoster (shingles)
Pain, paresthesias in involved DERMATOME, precede unilateral rash (most commonly thoracic region)
closely grouped vesicles on erythematous base, evolve into pustules, which dry and crust
Mild/Severe pain, can persist for months or years (postherpetic neuralgia)
Tinea Barbae - fungus
dermatophytosis in beard area (men only)
follicular papules and pustules, can develop into kerion
Tinea cruris - fungus (groin)
scaling erythematous plaque, sharp margins
pruritis, pain
Warts - Verruca vulgaris
frequently on fingers/hands, face, knees and elbows
Well-defined papules, rough and spiny, may be single or grouped
HPV 2 & 4
Plantar and Palmar Warts: Verruca plantaris
hyperkeratotic papules (painful with pressure)
Black dots can be seen when shaved away (thrombosed dermal capillary loops)
HPV 1
Herpes Zoster (shingles)
Pain, paresthesias in involved DERMATOME, precede unilateral rash (most commonly thoracic region)
closely grouped vesicles on erythematous base, evolve into pustules, which dry and crust
Mild/Severe pain, can persist for months or years (postherpetic neuralgia)
Folliculitis - Carbuncles
multiple, closely set furuncles with connecting sinus tracts
Cellulitis
warm, painful plaque, can develop bulla, sloughing of skin
Systemic symptoms preceding: regional lymphadenopathy, malaise, fever
S. aureus, Beta-hemolytic streptococci
Cellulitis
Infection extending to Subcutaneous tissue
S. aureus, Beta-hemolytic streptococci
Folliculitis - Furuncles
Boils - deep, tender, and inflamed nodules.
Evolve to fluctuant pus-filled abscess.
Folliculitis (beard)
herpes simplex virus
Cellulitis
warm, painful plaque, can develop bulla, sloughing of skin
systemic symptoms preceding: regional lymphadenopathy, malaise and fever
S. aureus, Beta-hemolytic streptococci
Tinea Pedis - moccasin-type
dermatophytosis of the feet
interdigital scaling, erosion with pruritis and malodor (athlete’s foot)
superficial white scale in moccasin-type distribution, or can be vesiculo-bullous type
T. rubrum
Candidiasis: diaper dermatitis
“opportunistic yeast infection”
erythematous patches, sharply demarcated with SATELLITE LESIONS
Candida albicans
Impetigo
Non-bullous
honey-colored crusted plaque
S. aureus
Nongenital Herpes Simplex (HSV-1) - herpes labialis
Orofacial (can be found in genitals) - almost everyone has it! - sensory nerve endings
grouped, uniform vesicles on erythematous base, preceded by burning or tingling.
lips
Tinea Pedis (and onychomycosis)
dermatophytosis of the feet
interdigital scaling, erosion with pruritis and malodor (athlete’s foot)
superficial white scale in moccasin-type distribution, or can be vesiculo-bullous type
T. rubrum
Warts - Verruca vulgaris
frequently on fingers/hands, face, knees and elbows
Well-defined papules, rough and spiny, may be single or grouped
HPV 2 & 4
Onychomycosis
fungal infection of the nail
DERMATOPHYTES, yeast, etc
Pityriasis Versicolor
Patches or macules, hyper/hypopigmented, do not tan after sun exposure, dust-like scales, pruritis mild or absent.
Usually on trunk
Malassezia furfur
Candidiasis (cutaneous): intertrigo, interdigital
“opportunistic yeast infection”
warm, moist areas, sharply demarcated, erythematous patches, SATELLITE LESIONS
Candida albicans
Tinea Capitis - fungus (Kerion)
dermatophytosis of the scalp and associated hair
Hair may become brittle and break off, well defined scaly area of alopecia
Kerion is a boggy, inflammatory mass, same location of alopecia, follicles filled with pus
T. tonsurans
Pityriasis Versicolor
Patches or macules, hyper/hypopigmented, do not tan after sun exposure, dust-like scales, pruritis mild or absent.
Usually on trunk
Malassezia furfur
Tinea Capitis - fungus (gray patch type)
dermatophytosis of the scalp and associated hair
Hair may become brittle and break off, well defined scaly area of alopecia
T. tonsurans
Tinea cruris - fungus (groin)
scaling erythematous plaque, sharp margins
pruritis, pain
Tinea manus, Tinea pedis, (and onychomycosis)
dermatophytosis of the hands and feet
interdigital scaling and erosion with pruritis
T. rubrum
Erysipelas (hand)
plaque-like edematous erythema, sharply defined margins
fever, chills, malaise
Beta-hemolytic streptococcus
Oral Candidiasis
oral yeast infection
Candidiasis albicans
Folliculitis - Furuncles
Boils - deep, tender, and inflamed nodules.
Evolve to fluctuant pus-filled abscess.
Candidiasis (cutaneous): intertrigo
“opportunistic yeast infection”
warm, moist areas, sharply demarcated, erythematous patches, SATELLITE LESIONS
Candida albicans
Onychomycosis
fungal infection of the nail
DERMATOPHYTES, yeast, etc
Oral Candidiasis
oral yeast infection
Candidiasis albicans
Tinea Pedis - moccasin-type
dermatophytosis of the feet
interdigital scaling, erosion with pruritis and malodor (athlete’s foot)
superficial white scale in moccasin-type distribution, or can be vesiculo-bullous type
T. rubrum
Tinea corporis - fungus (ring worm)
dermatophytosis of the skin
erythematous, scaly plaque that spreads centrifugally as it clears centrally.
T. rubrum
Tinea cruris - fungus (groin)
scaling erythematous plaque, sharp margins
pruritis, pain
Folliculitis
Malassezia furfur
Nongenital Herpes Simplex (HSV-1) - herpetic whitlow
Orofacial (can be found in genitals) - almost everyone has it! - sensory nerve endings
grouped, uniform vesicles on erythematous base, preceded by burning or tingling.
hands
Nongenital Herpes Simplex (HSV-1) - herpetic whitlow
Orofacial (can be found in genitals) - almost everyone has it! - sensory nerve endings
grouped, uniform vesicles on erythematous base, preceded by burning or tingling.
hands - herpetic whitlow
Oral Candidiasis
oral yeast infection
Candidiasis albicans
Tinea Corporis - Majocchi granuloma
dermatophytosis of the skin, infected hair follicles, multiple papules
common on women’s legs that shave
T. rubrum
Onychomycosis
fungal infection of the nail
DERMATOPHYTES, yeast, etc
Verruca Plana - warts
flat-topped papules with minimal scale
frequently found on face, hands, lower legs
HPV 3 & 10
Erysipelas (face)
plaque-like edematous erythema, sharply defined margins
fever, chills, malaise
beta-hemolytic streptococcus
Pityriasis Versicolor
Patches or macules, hyper/hypopigmented, do not tan after sun exposure, dust-like scales, pruritis mild or absent.
Usually on trunk
Malassezia furfur
Tinea Capitis - fungus (black dot variant)
dermatophytosis of the scalp and associated hair
Hair may become brittle and break off, well defined scaly area of alopecia
T. tonsurans
Molluscum contagiosum
discrete, small, pink, pearly or flesh-colored papules.
Slowly enlarge, become umbilicated, white substance possibly expressed from center
commonly seen in children (STD in adults)
Molluscum contagiosum virus (poxvirus)
Warts - Verruca vulgaris
frequently on fingers/hands, face, knees and elbows
Well-defined papules, rough and spiny, may be single or grouped
HPV 2 & 4
Nongenital Herpes Simplex (HSV-1) - recurrent erythema multiforme
Orofacial (can be found in genitals) - almost everyone has it! - sensory nerve endings
grouped, uniform vesicles on erythematous base, preceded by burning or tingling.
oral mucosu, lips, hands
Tinea Pedis
dermatophytosis of the feet
interdigital scaling, erosion with pruritis and malodor (athlete’s foot)
superficial white scale in moccasin-type distribution, or can be vesiculo-bullous type
T. rubrum
Erythrasma - webspace
superficial localized infection in intertriginous areas
well-defined, reddish-brown, scaly
usually in groin, NOT fungal
Corynebacterium minutissimum
Pityriasis Versicolor
Patches or macules, hyper/hypopigmented, do not tan after sun exposure, dust-like scales, pruritis mild or absent.
Usually on trunk
Malassezia furfur
Herpes Zoster (shingles)
Pain, paresthesias in involved DERMATOME, precede unilateral rash (most commonly thoracic region)
closely grouped vesicles on erythematous base, evolve into pustules, which dry and crust
Mild/Severe pain, can persist for months or years (postherpetic neuralgia)
Sporotrichosis
fungal infection
common in gardeners, florists, farmers (plants or straw injuries) - on exposed area
dusky red nodule, painless ulcer, inflamed lymphatics (can swell and ulcerate as well)
Sporothrix schenckii
Folliculitis (forearm)
dome-shaped pustule at the opening of hair follicle.
can be bacterial, viral, fungal
(Staphylococcal, Pseudomonas)
Impetigo
Bullous
containing clear yellow fluid, yellow crust
positive SSSS
(Staphylococcal Scalded Skin Syndrome)
S. aureus
Herpes Zoster (shingles)
Pain, paresthesias in involved DERMATOME, precede unilateral rash (most commonly thoracic region)
closely grouped vesicles on erythematous base, evolve into pustules, which dry and crust
Mild/Severe pain, can persist for months or years (postherpetic neuralgia)
Erythrasma - axilla
superficial localized infection in INTRIGINOUS areas
well-defined, reddish-brown, scaly
Usually in groin, NOT fungal
Corynebacterium minutissimum
Nongenital Herpes Simplex (HSV-1) - herpes labialis
Orofacial (can be found in genitals) - almost everyone has it! - sensory nerve endings
grouped, uniform vesicles on erythematous base, preceded by burning or tingling.
oral mucosa, lips
Tinea corporis - fungus (ring worm)
dermatophytosis of skin
erythematous, scaly plaque that spreads centrifugally as it clears centrally.
T. rubrum
Folliculitis (cheek/beard)
dome-shaped pustule at the opening of a hair follicle.
can be bacterial, fungal, viral
(Staphylococcal, Pseudomonas)
Molluscum contagiosum
discrete, small, pink, pearly or flesh-colored papules.
Slowly enlarge, become umbilicated, white substance possibly expressed from center
commonly seen in children (STD in adults)
Molluscum contagiosum virus (poxvirus)
Pseudomonas folliculitis
Often from HOT TUB, infecting warm, moist areas.
Clears in 7-14 days, but may continue as reddish-brown, post-inflammatory hyperpigmentation
Varicella - (post-varicella scars)
Varicella-zoster virus
Tinea Manuum
dermatophytosis of the hands
interdigital scaling and erosion with pruritis
T. rubrum
Ecthyma
“punched out” appearance
neglected impetigo
S. aureus
Herpes Zoster (shingles) - scar
Pain, paresthesias in involved DERMATOME, precede unilateral rash (most commonly thoracic region)
closely grouped vesicles on erythematous base, evolve into pustules, which dry and crust
Mild/Severe pain, can persist for months or years (postherpetic neuralgia)
Tinea Pedis
dermatophytosis of the feet
interdigital scaling, erosion with pruritis and malodor (athlete’s foot)
superficial white scale in moccasin-type distribution, or can be vesiculo-bullous type
T. rubrum
Impetigo
Non-bullous
honey-colored crusted plaque
S. aureus
Molluscum contagiosum
discrete, small, pink, pearly or flesh-colored papules.
Slowly enlarge, become umbilicated, white substance possibly expressed from center
commonly seen in children (STD in adults)
Molluscum contagiosum virus (poxvirus)
