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Sleep patterns and symptoms of anxiety and depression in patients with chronic pain
Martha M C Castro1, Carla Daltro
1Professor Edgard Santos University Hospital, Federal University of Bahia, Salvador, BA, Brazil. marthamcastro@uol.com.br
Background:
Sleep disturbances and symptoms of anxiety and depression have been shown to be involved in the genesis and perpetuation of chronic pain.
Objective:
To evaluate sleep patterns and the prevalence of symptoms of anxiety and depression in patients with chronic pain.
Method:
Four hundred consecutive patients referred to a chronic pain outpatient clinic were investigated using patient charts, the numerical Visual Analogue Scale for the evaluation of pain, the Hospital Anxiety and Depression scale and the Mini-Sleep Questionnaire.
Results:
The mean age of patients was 45.6+/-11.4 years. The most frequent medical diagnosis was myofascial pain followed by neuropathic pain. The prevalence of symptoms of anxiety was 72.8%, depression 93% and altered sleep patterns 93%.
Conclusion:
This study revealed a high prevalence of symptoms of depression and anxiety and alterations in sleep patterns in patients with chronic pain, justifying investigation into these disturbances in this group of patients.
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