The Prevalence and Clinical Significance of Skin Manifestations in Parkinson's Disease Patients.

Background: Parkinson's disease (PD) is primarily characterized by motor symptoms, but non-motor symptoms, including skin manifestations, are increasingly recognized. These remain underexplored despite their potential impact on quality of life.

Objectives: This study aimed to evaluate the prevalence and clinical features of skin findings in PD patients, with a focus on identifying potential pathogenetic links between dermatological conditions and PD.

Methods: A total of 215 PD patients were included. Comprehensive dermatological examinations were performed, and demographic and clinical data were collected. Statistical analysis was conducted using SPSS 23.0, with significance set at P < 0.05.

Results: Skin conditions were found in 92.1% of PD patients. Xerosis, seborrheic dermatitis, and hyperhidrosis were the most common findings. Pre-PD xerosis was associated with an earlier stage of PD (P = 0.001). Use of PD medications, such as levodopa/carbidopa/entacapone, was linked to a lower incidence of seborrheic dermatitis (P = 0.040). A significant correlation was also noted between rosacea and cherry angioma (P = 0.01).

Conclusion: Dermatological conditions are prevalent in PD and may precede its motor symptoms. Skin assessments could aid early diagnosis and management of PD, highlighting the need for further research on their pathogenetic mechanisms.