Increased multiple sclerosis relapses related to lower prevalence of pain

Arq Neuropsiquiatr. 2015 Jul;73(7):593-600. doi: 10.1590/0004-282X20150073.

Abstract

Objective: The study aims to investigate the presence of pain amongst multiple sclerosis (MS) patients.

Method: One hundred MS patients responded to questionnaires evaluating neuropathic and nociceptive pain, depression and anxiety. Statistical analysis was performed using the Mann-Whitney U, Chi-Square and two-tailed Fisher's exact tests and multivariate logistic regression.

Results: Women had a statistically higher prevalence of pain (p = 0.037), and chances of having pain after the age of 50 reduced. Women with pain had a statistically significant lower number of relapses (p = 0.003), restricting analysis to those patients with more than one relapse. After the second relapse, each relapse reduced the chance of having pain by 46%. Presence of pain was independent of Expanded Disability Status Scale (EDSS) anxiety, and depression.

Conclusion: Our findings suggest a strong inverse association between relapses and pain indicating a possible protective role of focal inflammation in the control of pain.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Age Distribution
  • Age of Onset
  • Anxiety / epidemiology
  • Brazil / epidemiology
  • Depression / epidemiology
  • Disability Evaluation
  • Disease Progression
  • Epidemiologic Methods
  • Female
  • Humans
  • Male
  • Middle Aged
  • Multiple Sclerosis / epidemiology*
  • Multiple Sclerosis / physiopathology
  • Neuralgia / epidemiology*
  • Neuralgia / physiopathology
  • Nociceptive Pain / epidemiology*
  • Nociceptive Pain / physiopathology
  • Pain Measurement
  • Recurrence
  • Sex Distribution
  • Sex Factors