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Ranking of Tests for Pain Hypersensitivity According to Their Discriminative Ability in Chronic Neck Pain.

Ranking of Tests for Pain Hypersensitivity According to Their Discriminative Ability in Chronic Neck Pain.

Reg Anesth Pain Med. 2013 Jun 11;

Authors: Neziri AY, Limacher A, Jüni P, Radanov BP, Andersen OK, Arendt-Nielsen L, Curatolo M

Abstract
BACKGROUND AND OBJECTIVES: Quantitative sensory testing (QST) is widely used to investigate peripheral and central sensitization. However, the comparative performance of different QST for diagnostic or prognostic purposes is unclear. We explored the discriminative ability of different quantitative sensory tests in distinguishing between patients with chronic neck pain and pain-free control subjects and ranked these tests according to the extent of their association with pain hypersensitivity. METHODS: We performed a case-control study in 40 patients and 300 control subjects. Twenty-six tests, including different modalities of pressure, heat, cold, and electrical stimulation, were used. As measures of discrimination, we estimated receiver operating characteristic curves and likelihood ratios. RESULTS: The following quantitative sensory tests displayed the best discriminative value: (1) pressure pain threshold at the site of the most severe neck pain (fitted area under the receiver operating characteristic curve, 0.92), (2) reflex threshold to single electrical stimulation (0.90), (3) pain threshold to single electrical stimulation (0.89), (4) pain threshold to repeated electrical stimulation (0.87), and (5) pressure pain tolerance threshold at the site of the most severe neck pain (0.86). Only the first 3 could be used for both ruling in and out pain hypersensitivity. CONCLUSIONS: Pressure stimulation at the site of the most severe pain and parameters of electrical stimulation were the most appropriate QST to distinguish between patients with chronic neck pain and asymptomatic control subjects. These findings may be used to select the tests in future diagnostic and longitudinal prognostic studies on patients with neck pain and to optimize the assessment of localized and spreading sensitization in chronic pain patients.

PMID: 23759706 [PubMed – as supplied by publisher]

Ranking of Tests for Pain Hypersensitivity According to Their Discriminative Ability in Chronic Neck Pain | Pain in top of chest bone

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