Cutaneous Infectious Diseases Pics Flashcards by Jay Gray

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

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Impetigo

Bullous

contains clear yellow fluid, yellow crust

positive SSSS

(Staphylococcal Scalded Skin Syndrome)

S. aureus

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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

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Folliculitis (axilla)

dome-shaped pustule at opening of hair follicle.

can be bacterial, fungal, viral

(Staphylococcal, Pseudomonas)

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Folliculitis - dermatophytic (buttocks)

Trichophyton rubrum

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Tinea barbae - fungus

dermatophytosis of beard area (men only)

follicular papules and pustules that can develop into kerion

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Candidiasis (cutaneous): intertrigo

“opportunistic yeast infection”

warm, moist areas, sharply demarcated, erythematous patches, SATELLITE LESIONS

Candida albicans

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Erysipelas (buttocks)

plaque-like edematous erythema, sharply defined margins

fever, chills, malaise

Beta-hemolytic streptococcus

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Tinea corporis - fungus (ring worm)

dermatophytosis of skin

erythematous, scaly plaque that spreads centrifugally as it clears

T. rubrum

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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)

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Tinea Barbae - fungus

dermatophytosis in beard area (men only)

follicular papules and pustules, can develop into kerion

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Tinea cruris - fungus (groin)

scaling erythematous plaque, sharp margins

pruritis, pain

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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

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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

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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)

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Folliculitis - Carbuncles

multiple, closely set furuncles with connecting sinus tracts

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Cellulitis

warm, painful plaque, can develop bulla, sloughing of skin

Systemic symptoms preceding: regional lymphadenopathy, malaise, fever

S. aureus, Beta-hemolytic streptococci

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Cellulitis

Infection extending to Subcutaneous tissue

S. aureus, Beta-hemolytic streptococci

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Folliculitis - Furuncles

Boils - deep, tender, and inflamed nodules.

Evolve to fluctuant pus-filled abscess.

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Folliculitis (beard)

herpes simplex virus

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Cellulitis

warm, painful plaque, can develop bulla, sloughing of skin

systemic symptoms preceding: regional lymphadenopathy, malaise and fever

S. aureus, Beta-hemolytic streptococci

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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

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Candidiasis: diaper dermatitis

“opportunistic yeast infection”

erythematous patches, sharply demarcated with SATELLITE LESIONS

Candida albicans

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Impetigo

Non-bullous

honey-colored crusted plaque

S. aureus

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_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

_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*

_Erythrasma_ - axilla superficial localized infection in INTRIGINOUS areas well-defined, reddish-brown, scaly Usually in groin, NOT fungal *Corynebacterium minutissimum*

_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)

_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)

_Impetigo_ Non-bullous honey-colored crusted plaque *S. aureus*

Cutaneous Infectious Diseases Pics Flashcards

(78 cards)