Correlations Between General Jealousy, Rumination, and Disease Stage in Patients with Parkinson's Disease

The current study aimed to investigate the correlation between psychological factors, general jealousy, and rumination, and the progression of Parkinson’s Disease (PD). The increasing awareness of non-motor symptoms in Parkinson’s patients, especially more severe ones, led us to assess how emotional states might be associated with the severity of the disease. Drawing on somewhat conflicting prior work and our own clinical intuitions, we hypothesized that patients reporting higher jealousy and rumination levels would tend to present at more advanced disease stages.

Our study included 40 participants with PD for this cross-sectional investigation. To gauge general jealousy, we administered the Multidimensional Jealousy Scale; for rumination, we used the Rumination Response Scale; and disease stage was determined via the well-established Hoehn and Yahr classification system. Pearson’s correlation coefficients tested relationships between general jealousy, rumination, and disease stage, while multiple linear regression analysis examined whether rumination could predict disease stage, controlling for age and disease duration.

Our hypothesis found support in the data. A strong positive correlation emerged between general jealousy and disease stage (r = 0.544, p < 0.01); in other words, patients with higher jealousy scores tended to be at more advanced stages of disease. A moderate positive correlation emerged between rumination and disease stage (r = 0.377, p < 0.01). Multiple regression analysis further revealed that rumination significantly predicted disease stage (standardized β = 0.473, p < 0.01; adjusted R² = 0.20, F(3,36) = 4.12, p < 0.05), suggesting that higher rumination is associated with greater disease severity. Descriptive statistics: General jealousy mean = 32.6 (SD = 7.1); rumination mean = 45.6 (SD = 8.0); disease stage mean = 2.7 (SD = 1.3).

These findings highlight how important emotional states could be and their interplay with PD severity, suggesting that addressing general jealousy and rumination could improve patient outcomes. In a broader context, this supports integrating psychological interventions into neurodegenerative disease management, potentially influencing global care models for chronic illnesses.

The findings indicate the relevance of psychological factors in the management of Parkinson’s disease. Importantly, the significant associations between general jealousy, rumination, and disease stage demonstrate the importance of care approaches that include emotional and physical well-being. Further research is needed to confirm these associations longitudinally. Increased knowledge should be developed about interventions targeting general jealousy and rumination as a way to improve patient outcomes and quality of life.