Uncommon Presentation of Pityriasis Rubra Pilaris of the Scalp: Clinical, Trichoscopic, and Histopathologic Features and Review of the Literature

This article presents a rare case of pityriasis rubra pilaris (PRP) affecting only the scalp in a 59-year-old female, with unique trichoscopic features such as white-silvery scales forming triangular hair casts. The study emphasizes the importance of recognizing scalp manifestations in PRP for accurate diagnosis and treatment, and includes a literature review comparing this case with existing reports. Initial treatment with clobetasol cream followed by acitretin led to significant improvement. The report highlights the need for further research into scalp-specific PRP manifestations and potential links to underlying conditions like malignancy, and suggests the potential use of JAK inhibitors for resistant cases.