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Parakeratosis is a mode of keratinization characterized by the retention of nuclei in the stratum corneum. In mucous membranes, parakeratosis is normal.〔Kumar, Vinay; Fausto, Nelson; Abbas, Abul (2010) ''Robbins & Cotran Pathologic Basis of Disease'' (8th ed.). Saunders. Page 1170. ISBN 978-1-4160-3121-5.〕 In the skin, this process leads to the abnormal replacement of annular squames with nucleated cells. Parakeratosis is associated with the thinning or loss of the granular layer and is usually seen in diseases of increased cell turnover, whether inflammatory or neoplastic. Parakeratosis is seen in the plaques of psoriasis and in dandruff. Granular parakeratosis (originally termed axillary granular parakeratosis) is an idiopathic, benign, nondisabling cutaneous disease that manifests with intertriginous erythematous, brown or red, scaly or keratotic papules and plaques. It presents in all age groups and has no established clinical associations. ==See also== * Skin lesion * Skin disease * List of skin diseases 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「parakeratosis」の詳細全文を読む スポンサード リンク
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