Huntington's Disease: Prevalence and Psychological Indicators of Pain.

BACKGROUND

Huntington's disease (HD) is a genetic neurodegenerative condition that involves impairments in movement, cognition, and mood. Research is lacking in HD with regard to the prevalence of pain and the relationships between psychological factors and pain. The aim of this research was to investigate the prevalence of pain and identify the psychological factors associated with pain severity in people with HD.

METHODS

This data-mining study used data from 1474 people who participated in the European Huntington's Disease Network (EHDN) REGISTRY study. Pain severity was measured using the Medical Outcome Study 36-item short-form health survey. Separate ordinal regression analyses were conducted with participant-rated and interviewer-rated psychological measures (the Hospital Anxiety and Depression Scale-Snaith Irritability Scale and the Unified Huntington's Disease Rating Scale). The psychological factors considered were anxiety, depression, irritability, aggression, low self-esteem, and apathy.

RESULTS

The prevalence of pain in the total sample was 41% (stage I, 42%; stage II, 44%; stage III, 39%; stages IV and V, 50%). After controlling for confounding variables, pain severity was significantly associated with participant-rated anxiety and depression. Interviewer-rated anxiety, depression, and irritability also were significantly associated with severity of pain after controlling for confounding variables.

CONCLUSIONS

This research confirmed that pain is indeed an issue for people with HD, particularly during the later stages of the disease. Caregivers and health professionals should consider the possibility that people with HD might be experiencing pain, particularly if they are showing signs of anxiety, depression, or irritability.