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Meta-Analysis
. 2012 Aug;153(8):1620-1624.
doi: 10.1016/j.pain.2012.04.007. Epub 2012 Jun 22.

Investigation of neuropathic pain in treated leprosy patients in Ethiopia: a cross-sectional study

Omer M O Haroun  1 , Aki Hietaharju, Elizabeth Bizuneh, Fasil Tesfaye, Wim J Brandsma, Maija Haanpää, Andrew S C Rice, Diana N J Lockwood
Affiliations
Meta-Analysis

Investigation of neuropathic pain in treated leprosy patients in Ethiopia: a cross-sectional study

Omer M O Haroun et al. Pain. 2012 Aug.

Abstract

Pain can be a significant problem for treated leprosy patients. It can be nociceptive due to tissue inflammation occurring during episodes of immune mediated reactions, or neuropathic due to leprosy affecting the somatosensory system. There are sparse epidemiological data on the prevalence and impact of neuropathic pain in treated leprosy patients. Tools for assessing neuropathic pain have not been validated in leprosy. We have examined nature of pain in a cross-sectional study to determine the prevalence of neuropathic pain (NP) in 80 recently treated leprosy patients in Ethiopia. Pain and depression were evaluated using the General Health Questionnaire (GHQ-12) and the Brief Pain Inventory (BPI) questionnaire. The Douleur Neuropathique en 4 Questions (DN4) and the Leeds Assessment of Neuropathic Symptoms and Signs (LANSS) were used as screening tools for NP. Pain of any type was experienced by 60% of the patients. Pure nociceptive pain was experienced by 43%, pure NP by 11%, and mixed pain by 6%. Of the 14 patients who had NP either alone or in combination with nociceptive pain, 12 had high GHQ-12 scores, indicating possible depression. The DN4 had sensitivity and specificity of 100% and 45%, whereas the LANSS had 85% and 42%, respectively. This is the first study to differentiate nociceptive from NP in leprosy patients. The prevalence of NP is high in recently treated Ethiopian leprosy patients. We have validated the use of DN4 in leprosy and it is easier to use than LANSS. Depression is a common co-morbidity in patients with NP. The high prevalence and morbidity of NP in treated leprosy patients warrant clinical trials to assess the efficacy of pain therapies for leprosy-associated NP.

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References

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