Hyperkeratosis: Difference between revisions
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{{Infobox medical condition | |||
| name = Hyperkeratosis | |||
| image = [[File:Prominent_hyperkeratosis.jpg|250px]] | |||
| caption = Prominent hyperkeratosis on the skin | |||
| field = [[Dermatology]] | |||
| synonyms = | |||
| symptoms = Thickening of the [[stratum corneum]], [[callus]], [[corn (medicine)|corns]] | |||
| complications = [[Skin cancer]] (rare) | |||
| onset = Varies depending on cause | |||
| duration = Chronic | |||
| causes = [[Chronic pressure]], [[friction]], [[genetic disorders]] | |||
| risks = [[Occupational hazards]], [[genetic predisposition]] | |||
| diagnosis = [[Clinical examination]], [[biopsy]] | |||
| differential = [[Psoriasis]], [[eczema]], [[lichen planus]] | |||
| prevention = Avoidance of pressure and friction, use of protective footwear | |||
| treatment = [[Keratolytic]] agents, [[moisturizers]], [[retinoids]] | |||
| medication = [[Salicylic acid]], [[urea]], [[tretinoin]] | |||
| prognosis = Good with treatment | |||
| frequency = Common | |||
}} | |||
'''Hyperkeratosis''' (''HY-per-KAYR-uh-TOH-sis'') is a skin condition characterized by an abnormal thickening of the skin's outer layer, predominantly composed of the protein [[keratin]]. This thickening can arise due to various reasons including habitual wear and tear, chronic inflammatory conditions, or underlying genetic disorders. | '''Hyperkeratosis''' (''HY-per-KAYR-uh-TOH-sis'') is a skin condition characterized by an abnormal thickening of the skin's outer layer, predominantly composed of the protein [[keratin]]. This thickening can arise due to various reasons including habitual wear and tear, chronic inflammatory conditions, or underlying genetic disorders. | ||
[[File:Histopathology of reactive hyperkeratosis.jpg|left|thumb|Histopathology of reactive hyperkeratosis]] | |||
[[File:Histopathology of reactive hyperkeratosis.jpg|thumb|Histopathology of reactive hyperkeratosis]] | |||
== Causes == | == Causes == | ||
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The primary cause of hyperkeratosis is the excessive accumulation of keratin on the skin's surface. This accumulation can be attributed to: | The primary cause of hyperkeratosis is the excessive accumulation of keratin on the skin's surface. This accumulation can be attributed to: | ||
* Normal wear and tear, leading to the formation of [[corns]] and [[calluses]]. | * Normal wear and tear, leading to the formation of [[corns]] and [[calluses]]. | ||
* Chronic inflammatory conditions such as [[eczema]]. | * Chronic inflammatory conditions such as [[eczema]]. | ||
* Genetic disorders, which affect keratin production or shedding. | * Genetic disorders, which affect keratin production or shedding. | ||
[[File:Prominent hyperkeratosis (original).jpg|left|thumb|Prominent hyperkeratosis (original)]] | |||
[[File:Prominent hyperkeratosis (original).jpg|thumb | |||
== Types of Hyperkeratosis == | == Types of Hyperkeratosis == | ||
Various types of hyperkeratosis arise depending on the root cause: | Various types of hyperkeratosis arise depending on the root cause: | ||
* '''Corns and Calluses''': These are thickened patches of skin that develop in response to repeated friction or pressure. While corns typically form on the toes, calluses can form on hands, feet, or any part of the skin subjected to regular friction. | * '''Corns and Calluses''': These are thickened patches of skin that develop in response to repeated friction or pressure. While corns typically form on the toes, calluses can form on hands, feet, or any part of the skin subjected to regular friction. | ||
* '''Eczema-induced Hyperkeratosis''': [[Eczema]], or atopic dermatitis, is an inflammatory skin condition. Chronic eczema can lead to the thickening of the skin as a protective response. | * '''Eczema-induced Hyperkeratosis''': [[Eczema]], or atopic dermatitis, is an inflammatory skin condition. Chronic eczema can lead to the thickening of the skin as a protective response. | ||
* '''Genetic Hyperkeratosis''': Some genetic conditions can lead to hyperkeratosis. Examples include: | * '''Genetic Hyperkeratosis''': Some genetic conditions can lead to hyperkeratosis. Examples include: | ||
''' '''[[X-linked ichthyosis]]''': A condition caused by mutations in the STS gene leading to dry, scaly skin. | |||
''' '''[[ichthyosis vulgaris]]''': This is the most common form of ichthyosis, leading to dry, scaly skin due to a genetic mutation affecting skin cell turnover. | |||
== See also == | == See also == | ||
* [[Keratin]] | * [[Keratin]] | ||
* [[Dermatology]] | * [[Dermatology]] | ||
Revision as of 03:57, 7 April 2025
Editor-In-Chief: Prab R Tumpati, MD
Obesity, Sleep & Internal medicine
Founder, WikiMD Wellnesspedia &
W8MD's medical weight loss NYC, sleep center NYC
Philadelphia medical weight loss and Philadelphia sleep clinics
| Hyperkeratosis | |
|---|---|
| |
| Synonyms | |
| Pronounce | N/A |
| Specialty | N/A |
| Symptoms | Thickening of the stratum corneum, callus, corns |
| Complications | Skin cancer (rare) |
| Onset | Varies depending on cause |
| Duration | Chronic |
| Types | N/A |
| Causes | Chronic pressure, friction, genetic disorders |
| Risks | Occupational hazards, genetic predisposition |
| Diagnosis | Clinical examination, biopsy |
| Differential diagnosis | Psoriasis, eczema, lichen planus |
| Prevention | Avoidance of pressure and friction, use of protective footwear |
| Treatment | Keratolytic agents, moisturizers, retinoids |
| Medication | Salicylic acid, urea, tretinoin |
| Prognosis | Good with treatment |
| Frequency | Common |
| Deaths | N/A |
Hyperkeratosis (HY-per-KAYR-uh-TOH-sis) is a skin condition characterized by an abnormal thickening of the skin's outer layer, predominantly composed of the protein keratin. This thickening can arise due to various reasons including habitual wear and tear, chronic inflammatory conditions, or underlying genetic disorders.
Causes
The primary cause of hyperkeratosis is the excessive accumulation of keratin on the skin's surface. This accumulation can be attributed to:
- Normal wear and tear, leading to the formation of corns and calluses.
- Chronic inflammatory conditions such as eczema.
- Genetic disorders, which affect keratin production or shedding.
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Types of Hyperkeratosis
Various types of hyperkeratosis arise depending on the root cause:
- Corns and Calluses: These are thickened patches of skin that develop in response to repeated friction or pressure. While corns typically form on the toes, calluses can form on hands, feet, or any part of the skin subjected to regular friction.
- Eczema-induced Hyperkeratosis: Eczema, or atopic dermatitis, is an inflammatory skin condition. Chronic eczema can lead to the thickening of the skin as a protective response.
- Genetic Hyperkeratosis: Some genetic conditions can lead to hyperkeratosis. Examples include:
X-linked ichthyosis: A condition caused by mutations in the STS gene leading to dry, scaly skin. ichthyosis vulgaris: This is the most common form of ichthyosis, leading to dry, scaly skin due to a genetic mutation affecting skin cell turnover.
See also
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