Dermatitis: Difference between revisions
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===Non vesicullobullous, non-pustular lesions without epidermal changes, lymphocytic infiltrate=== | ===Non vesicullobullous, non-pustular lesions without epidermal changes, lymphocytic infiltrate=== | ||
{|class="wikitable" | {|class="wikitable" | ||
! Main conditions<ref name="Alsaad2005"/> !! Characteristics | ! Main conditions<ref name="Alsaad2005"/> !! Characteristics !! Image | ||
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! Urticaria, lymphocyte predominant | ! Urticaria, lymphocyte predominant | ||
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! Pigmented purpuric dermatosis | ! Pigmented purpuric dermatosis | ||
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*Perivascular infiltrate, but may involve the dermis, further away from blood vessels.<ref name=dermpedia>{{ | *Perivascular infiltrate, but may involve the dermis, further away from blood vessels.<ref name=dermpedia>{{cite web|url=http://www.dermpedia.org/dermpedia-textbook/pigmented-purpuric-dermatoses|title=Pigmented purpuric dermatoses|author=Stephen Lyle|accessdate=2019-11-05|website=Dermpedia.org}}</ref> | ||
*Sometimes tendency for lichenoid infiltrate<ref group="notes">Pigmented purpuric dermatitis of Gougerot and Blum particularly have a tendency for lichenoid infiltrate.</ref><ref name=dermpedia/> | *Sometimes tendency for lichenoid infiltrate<ref group="notes">Pigmented purpuric dermatitis of Gougerot and Blum particularly have a tendency for lichenoid infiltrate.</ref><ref name=dermpedia/> | ||
*Mild vascular damage, mainly endothelial swelling and focal karyorrhectic debris.<ref name=dermpedia/> | *Mild vascular damage, mainly endothelial swelling and focal karyorrhectic debris.<ref name=dermpedia/> | ||
*Red blood cell extravasation.<ref name=dermpedia/> | *Red blood cell extravasation.<ref name=dermpedia/> | ||
*The epidermis may be normal or may exhibit spongiosis, focal parakeratosis, exocytosis and/or vacuolar change.<ref name=dermpedia/> | *The epidermis may be normal or may exhibit spongiosis, focal parakeratosis, exocytosis and/or vacuolar change.<ref name=dermpedia/> | ||
| | | [[File:Histopathology of Schamberg disease.jpg|190px]] | ||
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! Erythema annulare centrifugum | ! Erythema annulare centrifugum | ||
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| | *Superficial types:<ref name=dermnetz>{{cite web|url=https://www.dermnetnz.org/topics/erythema-annulare-centrifugum-pathology/|title=Histology of erythema annulare centrifugum|website=DermNet NZ|accessdate=2019-11-05}}</ref> | ||
:*Mild spongiosis, parakeratosis and microvesiculation. | |||
:*"Coat-sleeve anomaly": tight lymphohistiocytic infiltrate surrounding superficial vessels | |||
| | Deep lesions: Sharply demarcated perivascular mononuclear cell infiltrate in middle to deep dermis<ref name=dermnetz/> | ||
| | | [[File:Micrograph of erythema annulare centrifugum.jpg|190px]] | ||
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! Not otherwise specified | ! Not otherwise specified | ||