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(→Microscopic: +df) |
(→Acne vulgaris: tweak) |
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===Microscopic=== | ===Microscopic=== | ||
Features:<ref>{{Ref Derm|76}}</ref> | Features:<ref>{{Ref Derm|76}}</ref> | ||
*Folliculitis:<ref name=Ref_Derm77>{{Ref Derm|77}}</ref> | |||
**[[Neutrophil]]s around hair follicle and infiltrate into it - including the follicular canal. | |||
*Epidermal invagination ''or'' cyst at site of a hair follicle - contains: | *Epidermal invagination ''or'' cyst at site of a hair follicle - contains: | ||
**Sebum. | **Sebum. | ||
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#Open comedones ("blackheads") - no extension to epidermal surface. | #Open comedones ("blackheads") - no extension to epidermal surface. | ||
#Closed comedones ("whiteheads") - to epidermal surface have wide opening. | #Closed comedones ("whiteheads") - to epidermal surface have wide opening. | ||
DDx - acneiform disorder:<ref name=Ref_Derm77>{{Ref Derm|77}}</ref> | |||
*Rosacea. | |||
*Infective folliculitis. | |||
*Perioral dermatitis. | |||
*Acne vulgaris. | |||
Image: | Image: |
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