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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 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]
[4] [5] The condition is the most severe form of ichthyosis (except for syndromes that include ichthyosis, for example, Neu–Laxova syndrome), a group of genetic disorders characterised by scaly skin. [8] Harlequin-type ichthyosis is caused by mutations in the ABCA12 gene. [4]
X-linked ichthyosis (abbreviated XLI) is a skin condition caused by the hereditary deficiency of the steroid sulfatase (STS) enzyme that affects 1 in 2000 to 1 in 6000 males. [2] XLI manifests with dry, scaly skin [3] and is due to deletions [4] [5] or mutations [6] in the STS gene.
Psoriasis, an autoimmune skin disease, can appear as scaly and inflamed patches of skin. Cold, dry weather can trigger flare-ups, according to the American Academy of Dermatology Association.
What it looks like: Psoriasis, another inflammatory condition that dermatologists see frequently, is known to causes scaly, itchy areas of thickened skin called plaques that can look like rashes.
What it looks like: Medically known as atopic dermatitis, eczema is an umbrella term for a range of skin conditions characterized by red, splotchy, dry, cracked, crusty, or flaky skin, that can ...
Xeroderma, xerosis or xerosis cutis, or simply dry skin, is a skin condition characterized by excessively dry skin. [2] The term derives from Greek ξηρός (xeros) ' dry ' and δέρμα (derma) ' skin '. In most cases, dry skin can safely be treated with moisturizers (also called emollients).