The article presents a literature review and case study of a rare form of dermatitis in a female patient aged 61 - Kyrle disease (hyperkeratosis follicularis et parafollicularis in cutem penetrans). It also provides a detailed description of the clinical picture and differential diagnostics of the disease. The following typical changes were observed based on the results of histological examination: epidermic invaginations filled with corneous masses and areas of focal parakeratosis. Essential improvement in skin process dynamics was achieved against the background of treatment with Acitretin.