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Lichen sclerosus (LS) is a chronic, inflammatory skin disease, of unknown cause, which can affect any body part of any person, but has a strong preference for the genitals (penis, vulva), and is also known as balanitis xerotica obliterans when it affects the penis.
Morphea–lichen sclerosus et atrophicus overlap is characterized by both lesions of morphea and lichen sclerosus et atrophicus, most commonly seen in women. [ 3 ] : 171 Generalized morphea is characterized by widespread indurated plaques and pigmentary changes, sometimes associated with muscle atrophy, but without visceral involvement.
After evaporating the acetone, the lichen substances are left on the paper in a ring around the lichen fragment. The filter paper can then be spot tested in the usual way. [ 22 ] In cases where the results of a spot test on the thallus are uncertain, it is possible to squash a thin section of the tissue on a microscope slide in a minimal amount ...
The ISSVD regularly promotes and develops terminology, classification, and guidelines concerning these conditions. These include, among others: vulvar dermatosis (lichen sclerosus, lichen planus), [1] [2] vulvar pain , [3] [4] [5] vulvar intraepithelial neoplasia, [6] etc. More recently, a guideline concerning female cosmetic genital surgery ...
See umbilicate lichen. funoid Made of fibers or rope-like strands. [43] furcate Forked. [213] furfuraceous Covered with small flakes. [213] fuscocapitate A term used to describe structures, such as hairs or other appendages, that have a dark or dusky-colored rounded tip or head. [214] fuscous A dark, grayish-brown or grayish-black color. [213 ...
A number of skin disorders such as lichen sclerosus, and lichen simplex chronicus can affect the vulva. Crohn's disease of the vulva is an uncommon form of metastatic Crohn's disease, which manifests as a skin condition showing as hypertrophic lesions or vulvar abscesses . [ 94 ]
Unlike a foliose lichen, a fruticose lichen does not have a distinct upper and lower surface. [40] Instead, a cortex covers its entire surface, and the photobiont layer lies just below this, on all sides of the lichen's branches. [34] The centre of a fruticose lichen's branches varies depending on the genus involved. In most, the centre is hollow.
Dry lichens with a cyanobacterium as the photosynthetic partner tend to be dark grey, brown, or black. [43] The underside of the leaf-like lobes of foliose lichens is a different color from the top side (dorsiventral), often brown or black, sometimes white. A fruticose lichen may have flattened "branches", appearing similar to a foliose lichen ...