Malassezioses Flashcards

1
Q

Parasite

A

Levure du genre Malassezia
Commensales de la peau
Kératinophiles
Lipophiles

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2
Q

Pathologies associées

A

Infections superficielles et bénignes

Infections graves et profondes

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3
Q

Facteurs de risques

A
Chaleur 
Peau grasse 
Grossesse 
Hypercorticisme 
Immunodépression
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4
Q

Transmission

A

Non contagieuse

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5
Q

Symptômes des infections superficielles

A

Pytiriasis versicolor
Dermite séborrhéique
Pytiriasis capitis
Folliculite du tronc

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6
Q

Pytiriasis versicolor

A

Thorax et cou +++ = zones exposées au soleil

Pas de prurit

Macules couleur chamois finement squameuse

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7
Q

Dermite séborrhéique

A

Visage: sourcils, plis nasogéniens, lisière du front, pommettes

Lésions érythémato-squameuse

Augmenté par le stress et l’immunodépression

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8
Q

Pytiriasis capitis

A

Prurit

Augmenté par le stress et la séborrhée

Desquamation abondante = pellicule

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9
Q

Folliculite du tronc

A

Lésions pustuleuses et papuleuses

Sur le dos

Prurit

Homme +++

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10
Q

Diagnostic

A

Jaunâtre à la lumière de Wood
Scotch test cutané
Examen direct
Culture rare

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11
Q

Traitement

A

Kétoconazole topique: 1 application / semaine pendant 2 semaines

Correction des facteurs de risques

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12
Q

Infections profondes

A

Prématurés et immunodéprimés

Très rare

Perfusion d’intralipides

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