Prevalence, correlates and impact of pain and cramps in anti-MAG neuropathy: a multicentre European study

Abstract

BACKGROUND AND PURPOSE: The frequency of pain and cramps is uncertain in anti-myelin associated glycoprotein antibody (anti-MAG) neuropathy. Whether these symptoms may affect function/quality of life is unknown. METHODS: A cross-sectional study of the prevalence, correlates and impact of pain, pain subtypes and cramps, their severity, frequency and anatomical distribution was performed for 55 clinically stable patients with anti-MAG neuropathy. RESULTS: Pain of any type was reported by 80% of subjects. The most common subtype was paraesthesiae and dysaesthesiae (70%). Cramps were reported by >60% of patients, with lower limb cramps in all and upper limb cramps in about 20%. Cramps affected daily activities in >30% of these subjects, sleep in 60%, ability to exercise in >30%. Total pain score correlated with several Short Form 36 health-related quality of life (SF-36 HR-QoL) measures (P < 0.05), with Inflammatory Rasch-built Overall Disability Scale (I-RODS) (P = 0.006) and 10-m timed walk (P = 0.019). An independent association was ascertained with I-RODS (P = 0.002). Different pain subtypes showed multiple associations with SF-36 HR-QoL measures and/or functional scales. Upper limb cramps had multiple SF-36 HR-QoL functional correlates, with an independent association with the Overall Neuropathy Limitation Score (ONLS) (P = 0.004). Cramp severity correlated with ONLS (P = 0.04) and I-RODS (P = 0.028) and inversely with level of physiotherapy input (P = 0.009). Cramp frequency was associated with tremor score (P = 0.004) and multiple SF-36 HR-QoL subsections. CONCLUSIONS: Neuropathic pain and cramps may affect function and quality of life in anti-MAG neuropathy. Optimizing treatments of these symptoms, including by adequate levels of physiotherapy, may be beneficial in affected patients and requires further research.

Publication DOI: https://doi.org/10.1111/ene.13459
Divisions: Life & Health Sciences
Additional Information: © 2017 EAN. © 2017 John Wiley & Sons Ltd. This is the peer reviewed version of the following article: Prevalence, correlates and impact of pain and cramps in anti-MAG neuropathy, which has been published in final form at http://doi.wiley.com/10.1111/ene.13459. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Full Text Link: http://doi.wile ... .1111/ene.13459
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PURE Output Type: Article
Published Date: 2017-10-19
Published Online Date: 2017-10-14
Accepted Date: 2017-09-07
Authors: Rajabally, Yusuf
Delmont, E.
Hiew, F. L.
Aubé-nathier, A.-c.
Grapperon, A.-m.
Cassereau, J.
Attarian, S.

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