Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Excessive growth of horny tissue of the skin.

from The Century Dictionary.

  • noun In pathology, disease of the outer layers of the epidermis.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun medicine The condition of keratin growing on the skin.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a skin condition marked by an overgrowth of layers of horny skin

Etymologies

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Examples

  • But look at this image though, something known as keratosis pylorus.

    CNN Transcript Jun 26, 2008 2008

  • Actinic keratosis can be treated with topical creams and solutions, freezing or a mix of therapies.

    Reckoning With the Sun Laura Landro 2011

  • He sees many patients with a condition known as actinic keratosis—small, rough, raised areas on the skin that can develop into squamous cell carcinoma, a cancer that in turn can spread to internal organs and be life-threatening.

    Reckoning With the Sun Laura Landro 2011

  • See the explanation of seborrheic keratosis on page 238.

    Simple Skin Beauty Ellen Marmur 2009

  • Both of you have keratosis pilaris, which is a form of eczema.

    Simple Skin Beauty Ellen Marmur 2009

  • Frequently, I treat a section of sun-damaged actinic keratosis with a TCA peel spot treatment, rather than treating the entire face and neck.

    Simple Skin Beauty Ellen Marmur 2009

  • Most of the time it turns out to be a seborrheic keratosis, or sun spot.

    Simple Skin Beauty Ellen Marmur 2009

  • Dermatologists use one of several methods to remove a seborrheic keratosis.

    Simple Skin Beauty Ellen Marmur 2009

  • In my own scientific study, I found that it takes approximately two years for an actinic keratosis to progress to a squamous cell carcinoma.3

    Simple Skin Beauty Ellen Marmur 2009

  • It is the classic form of the disease and manifests as either rough bumps on the cheeks and arms keratosis pilaris, dry and red patches in the creases of the elbows and knees, or fissures behind the earlobes and on eyelid creases.

    Simple Skin Beauty Ellen Marmur 2009

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