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![Page 1: Institute for Microbiology, Medical Faculty of Masaryk University and St. Anna Faculty Hospital in Brno Miroslav Votava, Vladana Woznicová Skin infections.](https://reader035.fdocuments.in/reader035/viewer/2022062511/551af93c550346f70d8b51c7/html5/thumbnails/1.jpg)
InstituteInstitute for for Microbiology, Medical Faculty of Masaryk University Microbiology, Medical Faculty of Masaryk University and St. Anna Faculty Hospitaland St. Anna Faculty Hospital in Brno in Brno
Miroslav VotavaMiroslav Votava, Vladana Woznicová, Vladana Woznicová
SkinSkin infections infections
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Infections with skin symptomsInfections with skin symptoms
• primaryprimary skin infections skin infections• secondarysecondary infections of already diseased skin infections of already diseased skin• skin skin symptoms of systemic infectionssymptoms of systemic infections
EtiologyEtiology: : - - bacterialbacterial - - viralviral
- - fungalfungal - - parasiticparasitic
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BBacterialacterial skin infectionsskin infections
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Primary Primary acuteacute bacterial skin infections – I bacterial skin infections – I
Propionibacterium acnes – acne Propionibacterium acnes – acne vulgarisvulgaris
Staphylococcus aureusStaphylococcus aureus - folliculitis - folliculitis
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Primary Primary acuteacute bacterial skin infections – II bacterial skin infections – II
- local redness, heat, swelling, local redness, heat, swelling, and a highly characteristic raised, and a highly characteristic raised, indurated border, indurated border, no localized no localized purulencepurulence
- the the legs and facelegs and face are the most are the most frequently affected sitesfrequently affected sites - on the face is a on the face is a butterfly butterfly distributiondistribution involving the cheeks involving the cheeks and the bridge of the noseand the bridge of the nose
erysipelaserysipelas – – Streptococcus Streptococcus pyogenes pyogenes (GAS)(GAS)
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Primary Primary acuteacute bacterial skin infections – III bacterial skin infections – III
hordeolum hordeolum ((styestye) )
– – Staph. aureusStaph. aureus
Impetigo !Impetigo !
- Staph. aureus, - Staph. aureus,
- - Str. pyogenesStr. pyogenes
lymphangoitislymphangoitis
– – Strept. pyogenesStrept. pyogenes
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StyeStye
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Primary Primary acuteacute bacterial skin infections – IV bacterial skin infections – IV
Panaritium (whitlow)Panaritium (whitlow) StaphStaphylococcusylococcus aaureusureus
paronychiumparonychium Staphylococcus aureusStaphylococcus aureus
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Primary Primary acuteacute bacterial skin infections – V bacterial skin infections – V
erythemaerythema migransmigrans – – Borrelia burgdorferiBorrelia burgdorferi
- ticks (Ixodes ricinus)- ticks (Ixodes ricinus)
- serology, PCR- serology, PCR
- doxycycline in adults- doxycycline in adults
http://images.google.cz
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Primary Primary chronicchronic bacterial skin infections bacterial skin infections
- - actinomycosisactinomycosis ! ! -- Actinomyces israeliiActinomyces israelii
- chronic- chronic subcutaneous abscessessubcutaneous abscesses --A. A. israelii, Nocardia asteroides, Rhodococcus equiisraelii, Nocardia asteroides, Rhodococcus equi
- skin- skin granulomasgranulomas -- Mycobacterium marinum, M. haemophilum, M. chelonaeMycobacterium marinum, M. haemophilum, M. chelonae
- leprosy- leprosy -- Mycobacterium leprae Mycobacterium leprae
- Mycob- Mycobacteriumacterium tuberculosis – tuberculosis – lupus vulgarislupus vulgaris
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actinomycosisactinomycosis – – Actinomyces israeliiActinomyces israelii
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Skin symptoms of Skin symptoms of systemicsystemic bacterial infectionsbacterial infections
roseola roseola (rash in typhoid fever)(rash in typhoid fever) – Salmonella – Salmonella TyphiTyphi
disseminated gonorrhoeadisseminated gonorrhoea – – Neisseria gonorrhoeaeNeisseria gonorrhoeae
infectiveinfective endocarditisendocarditis – splinter haemorrhages – splinter haemorrhages
meningococcemiameningococcemia – – Neisseria meningitidisNeisseria meningitidis
scarlatinascarlatina (scarlet fever) – (scarlet fever) – Streptococcus pyogenesStreptococcus pyogenes
toxic shock syndrometoxic shock syndrome – S. aureus, S. pyogenes – S. aureus, S. pyogenes
syphilissyphilis – Treponema pallidum – Treponema pallidum
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InfectiveInfective endocarditisendocarditis – splinter haemorrhages – splinter haemorrhages
hopkinsvasculitis.org
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Rash - Rash - meningococcemiameningococcemia – – Neisseria meningitidisNeisseria meningitidis
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scarlatinascarlatina (scarlet fever) – (scarlet fever) – Streptococcus pyogenesStreptococcus pyogenes
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Fungal infectionsFungal infections
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cutaneous mycosescutaneous mycoses
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Etiology of cutaneous mycosesEtiology of cutaneous mycoses
Tinea pedis – Tinea pedis – Trichophyton rubrumTrichophyton rubrum, , Trich. mentagrophytes Trich. mentagrophytes var. var. interdigitale, interdigitale, Epidermophyton floccosumEpidermophyton floccosum
Onychomycosis Onychomycosis – – T. rubrum, E. floccosumT. rubrum, E. floccosum
Tinea corporis Tinea corporis – – T. rubrum, Microsporum canis, T. rubrum, Microsporum canis, M. gypseum, E. floccosum M. gypseum, E. floccosum
Tinea capitisTinea capitis – – M. gypseum, M. canis, M. audouiniiM. gypseum, M. canis, M. audouinii
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Viral infectionsViral infections
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Fifth Disease/Erythema infectiosum - Erythrovirus (Parvovirus) B19
Sixth Disease/ Exanthem subitum, Roseola infantum, "Sudden Rash", rose rash of infants, 3-day fever
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Skin symptoms in viral diseases – I Skin symptoms in viral diseases – I
Macular (spotted) exanthem:Macular (spotted) exanthem:
morbillimorbilli – morbilli virus, – morbilli virus, Morbillivirus Morbillivirus genus genus
rubellarubella – – rubella virus, rubella virus, RubivirusRubivirus genus genus
erythemaerythema infectiosuminfectiosum (the (the fifth fifth disease) – disease) – parvovirus B19, parvovirus B19, Erythrovirus Erythrovirus genus genus
exanthemaexanthema subitumsubitum (roseola infantum, the (roseola infantum, the sixthsixth disease) – HHV 6, disease) – HHV 6, Roseolovirus Roseolovirus genus genus
Umbiliform papulae:Umbiliform papulae:
molluscummolluscum contagiosumcontagiosum – molluscum – molluscum contagiosum virus, contagiosum virus, Molluscipoxvirus Molluscipoxvirus genus genus
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cdc.gov
Typical molluscum bumps. Note the pearly appearance and the dimple in Typical molluscum bumps. Note the pearly appearance and the dimple in the center of the bumps. the center of the bumps.
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http://img405.imageshack.us
Fifth Disease/ErythemaFifth Disease/Erythema infectiosuminfectiosum
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Skin symptoms in viral diseases – IISkin symptoms in viral diseases – II
Vesicles:Vesicles:herpesherpes simplexsimplex (cold sore) – HSV 1 (cold sore) – HSV 1
herpesherpes genitalisgenitalis – HSV 2 – HSV 2
varicellavaricella (chicken pox) – varicella-zoster virus, VZV (chicken pox) – varicella-zoster virus, VZV
herpesherpes zosterzoster (shingles) – VZV (shingles) – VZV
hand, foot and mouth diseasehand, foot and mouth disease – coxsackievirus – coxsackievirus
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herpesherpes simplexsimplex (cold sore) – HSV 1, (cold sore) – HSV 1, Simplexvirus Simplexvirus genusgenus
varicellavaricella (chicken pox) – varicella-zoster virus, VZV, (chicken pox) – varicella-zoster virus, VZV, Varicellovirus Varicellovirus genusgenus
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Skin symptoms in viral diseases – IIISkin symptoms in viral diseases – III
Petechiae:Petechiae:
Hemorrhagic feversHemorrhagic fevers – –
Ebola feverEbola fever, Ebola virus, Ebola virus
Marburg diseaseMarburg disease, Marburg virus, Marburg virus
Lassa feverLassa fever, Lassa virus, Lassa virus
GeneralizedGeneralized congenitalcongenital cytomegalic diseasecytomegalic disease – –
cytomegalovirus, CMV cytomegalovirus, CMV
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Parasitic infectionsParasitic infections
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Skin symptoms in Skin symptoms in parasitosesparasitoses – I – I
Domestic parasitoses:Domestic parasitoses:
scabiesscabies – itch mite, – itch mite, Sarcoptes scabieiSarcoptes scabiei
pediculosis capitispediculosis capitis – head louse, – head louse, Pediculus Pediculus capitiscapitis
pediculosis corporispediculosis corporis – body louse, – body louse, Pediculus Pediculus humanus humanus (syn. (syn. Pediculus corporisPediculus corporis))
pediculosis pubispediculosis pubis (phthiriasis) (phthiriasis) – pubic (crab) – pubic (crab) louse, louse, Phthirus pubisPhthirus pubis
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Skin symptoms in parasitoses – IISkin symptoms in parasitoses – II
Infestation by native ectoparasites:Infestation by native ectoparasites:
cimicosiscimicosis – bites by bedbug – bites by bedbug Cimex lectulariusCimex lectularius
pulicosispulicosis – bites by human flea – bites by human flea Pulex irritans,Pulex irritans, dog flea dog flea Ctenocephalides canisCtenocephalides canis, , cat flea cat flea Ctenocephalides felisCtenocephalides felis, , chicken flea chicken flea Ceratophyllus gallinaeCeratophyllus gallinae
ixodosisixodosis – – bitebite by hard tick by hard tick Ixodes ricinusIxodes ricinus
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Skin symptoms in parasitoses – IIISkin symptoms in parasitoses – III
Tropical parasitoses:Tropical parasitoses:
ulcus humidum ulcus humidum (humid ulcer) – (humid ulcer) – Leishmania Leishmania majormajor
ulcus siccum ulcus siccum (dry ulcer) – (dry ulcer) – Leishmania tropicaLeishmania tropica
dermatitis cercariosadermatitis cercariosa – cercariae of – cercariae of SchistosomaSchistosoma, , Bilharziella Bilharziella andandTrichobilharziaTrichobilharzia genera genera
dracunculosisdracunculosis – – Dracunculus medinensisDracunculus medinensis
filariosisfilariosis – filariae – filariae Loa loa Loa loa and and Onchocerca volvulusOnchocerca volvulus
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en.wikipedia.org
LeishmaniasisLeishmaniasis
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www.vet.uga.edu
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Edvard Munch (1863-1944):Edvard Munch (1863-1944):Death in a Room Death in a Room