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Difference between revisions of "Non-malignant skin disease"
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→Lichen planus: more
(→Lichen planus: more) |
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*Epidermal thickened - as very long rete ridges (described as "test tube-morphology") - '''key feature'''. | *Epidermal thickened - as very long rete ridges (described as "test tube-morphology") - '''key feature'''. | ||
**Epidermis between rete ridges thin. | **Epidermis between rete ridges thin. | ||
==Seborrheic dermatitis== | |||
===General=== | |||
*Very common. | |||
===Microscopic=== | |||
Features:<ref>{{Ref PBoD8|1191}}</ref> | |||
*Spongiosis (epidermal edema). | |||
*Acanthosis (epidermal thickening). | |||
*"Follicular lipping" = parakeratosis with neutrophils. | |||
*Perivascular neutrophils and lymphocytes. | |||
==Lichen planus== | ==Lichen planus== | ||