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The increasing use of opioids by patients suffering from chronic pain caused by different etiologies, and the possible effects of those substances on everyday activities, require careful evaluation of their effects. For this purpose, a systematic review was developed to assess the influence of opioids on the cognitive function in patients with chronic pain.

Opióides e a cognição de doentes com dor crônica: revisão sistemática Opioids and cognition by patients with chronic pain: a systematic review