hyperkeratosis

/ˌhaɪpərˌkɛrəˈtoʊsɪs/
noun
  1. A thickening of the outer layer of the skin, often caused by pressure, friction, or certain skin conditions.
    • Calluses on the feet are a common form of hyperkeratosis caused by repeated pressure from walking.
    • Using a moisturizer can help soften areas of hyperkeratosis on the elbows and knees.
    • The dermatologist explained that hyperkeratosis can occur in people with eczema or psoriasis.
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