Hyperkeratosis is based on the Ancient Greek morphemes hyper- + kerato- + -osis, meaning ‘the condition of too much keratin’.
It is the thickening of the stratum corneum, as a result of inflammation, as a protective response to pressure, or as a result of a genetic condition.
Some of the types of hyperkeratosis that a nail professional encounters usually are:
-calluses
-corns
-eczema
-warts
-psoriasis
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