Hyperkeratosis

hyperkeratosis

[¦hī·pər·ker·ə′tō·səs] (medicine) Hypertrophy of the cornea. Hypertrophy of the horny layer of the skin.

Hyperkeratosis

excessive development of the corneous layer of the skin in humans. Hyperkeratosis may be caused by external factors (such as prolonged pressure, friction, or the effects of lubricating oils) or internal factors (endocrine dysfunctions, hypovitaminosis A, occupational intoxication). Hyperkeratosis is manifested by the formation of horny plates, nodes of various sizes, protuberances, and spurs; the skin becomes dry and perspiration decreases. Hyperkeratosis may be accompanied by the formation of painful cracks (on the palms and soles). It may be limited (calluses, warts, keratomas) or diffuse, spread over large areas or the entire skin surface (ichthyosis). Treatment consists in soda or soap baths, vitamin therapy, and medications that dissolve the horny substance.

hyperkeratosis

[hi″per-ker″ah-to´sis] 1. hypertrophy of the horny layer of the skin, or any disease characterized by it.2. hypertrophy of the cornea. adj., adj hyperkeratot´ic.epidermolytic hyperkeratosis a hereditary autosomal dominant form of ichthyosis, present at birth. Characteristics include generalized redness of the skin and severe hyperkeratosis with small, hard wartlike scales over the entire body, accentuated in areas that flex or bend and sometimes involving the palms and soles. In infancy and childhood, there are recurrent bullae, most often on the lower limbs.follicular hyperkeratosis a skin condition characterized by excessive development of keratin in hair follicles, resulting in rough, cone-shaped, elevated papules, the openings of which are often closed with a white plug of encrusted sebum. Deficiencies of vitamins A and E, B complex vitamins, and essential fatty acids have all been implicated in the etiology. Called also phrynoderma.hyperkeratosis lenticula´ris per´stans an autosomal dominant skin disorder, usually occurring in the third or fourth decade of life, characterized by pink, red, or yellow to brown scaly papules on the lower leg and back of the foot, and sometimes on the trunk, thigh, arm, back and palm of the hand, or sole of the foot.

hy·per·ker·a·to·sis

(hī'pĕr-ker'ă-tō'sis), Thickening of the horny layer of the epidermis or mucous membrane.
See also: keratoderma, keratosis. Synonym(s): hyperkeratinization

hyperkeratosis

(hī′pər-kĕr′ə-tō′sĭs)n. pl. hyperkerato·ses (-sēz) Hypertrophy of the cornea or the horny layer of the skin.

hy′per·ker′a·tot′ic (-tŏt′ĭk) adj.

hyperkeratosis

Dermatology An ↑ in superficial keratinized layers of certain epithelia, skin, and uterine cervix; hyperkeratosis usually represents a reaction to irritation, and generally overlies benign epithelium

hy·per·ker·a·to·sis

(hī'pĕr-ker'ă-tō'sis) Thickening of the horny layer of the epidermis or mucous membrane.
See also: keratoderma, keratosis
Synonym(s): hyperkeratinization.

hyperkeratosis

Undue thickening of the outer layer of the skin so that a dense horny layer, such as a corn or callosity, results. This is a normal and essentially protective response to local pressure. Hyperkeratosis may also occur as an inherited disorder of the palms and the soles, or as ICHTHYOSIS.

hy·per·ker·a·to·sis

(hī'pĕr-ker'ă-tō'sis) Thickening of the horny layer of the epidermis or mucous membrane.

单词	hyperkeratosis
释义	hyperkeratosis hy·per·ker·a·to·sis H0358600 (hī′pər-kĕr′ə-tō′sĭs)n. pl. hy·per·ker·a·to·ses (-sēz) Hypertrophy of the cornea or the horny layer of the skin. hy′per·ker′a·tot′ic (-tŏt′ĭk) adj. hyperkeratosis (ˌhaɪpəˌkɛrəˈtəʊsɪs) n (Pathology) pathol overgrowth and thickening of the outer layer of the skin hyperkeratotic adj hy•per•ker•a•to•sis (ˌhaɪ pərˌkɛr əˈtoʊ sɪs) n. 1. proliferation of the cells of the cornea. 2. a thickening of the horny layer of the skin. [1835–45] hy`per•ker`a•tot′ic (-ˈtɒt ɪk) adj. Translations Hyperkeratosis hyperkeratosis [¦hī·pər·ker·ə′tō·səs] (medicine) Hypertrophy of the cornea. Hypertrophy of the horny layer of the skin. Hyperkeratosis excessive development of the corneous layer of the skin in humans. Hyperkeratosis may be caused by external factors (such as prolonged pressure, friction, or the effects of lubricating oils) or internal factors (endocrine dysfunctions, hypovitaminosis A, occupational intoxication). Hyperkeratosis is manifested by the formation of horny plates, nodes of various sizes, protuberances, and spurs; the skin becomes dry and perspiration decreases. Hyperkeratosis may be accompanied by the formation of painful cracks (on the palms and soles). It may be limited (calluses, warts, keratomas) or diffuse, spread over large areas or the entire skin surface (ichthyosis). Treatment consists in soda or soap baths, vitamin therapy, and medications that dissolve the horny substance. hyperkeratosis hyperkeratosis [hi″per-ker″ah-to´sis] 1. hypertrophy of the horny layer of the skin, or any disease characterized by it.2. hypertrophy of the cornea. adj., adj hyperkeratot´ic.epidermolytic hyperkeratosis a hereditary autosomal dominant form of ichthyosis, present at birth. Characteristics include generalized redness of the skin and severe hyperkeratosis with small, hard wartlike scales over the entire body, accentuated in areas that flex or bend and sometimes involving the palms and soles. In infancy and childhood, there are recurrent bullae, most often on the lower limbs.follicular hyperkeratosis a skin condition characterized by excessive development of keratin in hair follicles, resulting in rough, cone-shaped, elevated papules, the openings of which are often closed with a white plug of encrusted sebum. Deficiencies of vitamins A and E, B complex vitamins, and essential fatty acids have all been implicated in the etiology. Called also phrynoderma.hyperkeratosis lenticula´ris per´stans an autosomal dominant skin disorder, usually occurring in the third or fourth decade of life, characterized by pink, red, or yellow to brown scaly papules on the lower leg and back of the foot, and sometimes on the trunk, thigh, arm, back and palm of the hand, or sole of the foot. hy·per·ker·a·to·sis (hī'pĕr-ker'ă-tō'sis), Thickening of the horny layer of the epidermis or mucous membrane. See also: keratoderma, keratosis. Synonym(s): hyperkeratinization hyperkeratosis (hī′pər-kĕr′ə-tō′sĭs)n. pl. hyperkerato·ses (-sēz) Hypertrophy of the cornea or the horny layer of the skin. hy′per·ker′a·tot′ic (-tŏt′ĭk) adj. hyperkeratosis Dermatology An ↑ in superficial keratinized layers of certain epithelia, skin, and uterine cervix; hyperkeratosis usually represents a reaction to irritation, and generally overlies benign epithelium hy·per·ker·a·to·sis (hī'pĕr-ker'ă-tō'sis) Thickening of the horny layer of the epidermis or mucous membrane. See also: keratoderma, keratosis Synonym(s): hyperkeratinization. hyperkeratosis Undue thickening of the outer layer of the skin so that a dense horny layer, such as a corn or callosity, results. This is a normal and essentially protective response to local pressure. Hyperkeratosis may also occur as an inherited disorder of the palms and the soles, or as ICHTHYOSIS. hy·per·ker·a·to·sis (hī'pĕr-ker'ă-tō'sis) Thickening of the horny layer of the epidermis or mucous membrane. AcronymsSeeHPK
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hyperkeratosis

hy·per·ker·a·to·sis

hyperkeratosis

hy•per•ker•a•to•sis

Hyperkeratosis

hyperkeratosis

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hy·per·ker·a·to·sis

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hyperkeratosis

hy·per·ker·a·to·sis