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Ichthyosis (also named fish scale disease) [1] is a family of genetic skin disorders characterized by dry, thickened, scaly skin. [2] The more than 20 types of ichthyosis range in severity of symptoms, outward appearance, underlying genetic cause and mode of inheritance (e.g., dominant, recessive , autosomal or X-linked ). [ 3 ]
Ichthyosis hystrix is a group of rare skin disorders in the ichthyosis family of skin disorders characterized by massive hyperkeratosis with an appearance like spiny scales. [1] This term is also used to refer to a type of epidermal nevi with extensive bilateral distribution.
Epidermolytic ichthyosis (EI), [a] is a severe form of dry scaly skin, that initially presents with redness, blisters, erosions, and peeling in a newborn baby. [5] [6] Hyperkeratosis typically develops several months later. [6] Other symptoms include itch, painful fissures, strong body odor, and absence of sweat. [6]
Epidermolytic hyperkeratosis Ichthyosis hystrix of Curth–Macklin Diffuse nonepidermolytic palmoplantar keratoderma (Unna–Thost keratoderma) Diffuse epidermolytic palmoplantar keratoderma (Vörner keratoderma) 2 (2e) Ichthyosis bullosa of Siemens: 3: Meesmann corneal dystrophy: 4: White sponge nevus: 5: Epidermolysis bullosa simplex Dowling ...
Ichthyosis vulgaris (also known as "autosomal dominant ichthyosis" [1] and "Ichthyosis simplex" [1]) is a skin disorder causing dry, scaly skin. It is the most common form, and one of the mildest forms, of ichthyosis, [2] [3]: 486 affecting around 1 in 250 people. [4] For this reason it is known as common ichthyosis.
Ichthyosis bullosa of Siemens was first described by the German dermatologist Hermann Werner Siemens in 1937 from his study of an affected family. [12] In 1994 the gene causing ichthyosis bullosa of Siemens was discovered. In the same year, it was also proved that ichthyosis exfoliativa is the same disease as ichthyosis bullosa of Siemens. [4]
Eclabium (eversion of the lips), ectropion and alopecia (hair loss) are more common in congenital ichthyosiform erythroderma than in lamellar ichthyosis. [ 3 ] [ non-primary source needed ] Congenital ichthyosiform erythroderma can present very similarly to lamellar ichthyosis and they often share characteristics, though the two conditions can ...
Ichthyosis linearis circumflexa is a distinctive skin condition of generalized hyperkeratosis and polycyclic and serpiginous erythematous plaques with a characteristic, migratory, double-edged scale at the margins, and is the typical cutaneous manifestation of Netherton's syndrome.