Figure 3From: Validity and reliability of the Spanish version of the DN4 (Douleur Neuropathique 4 questions) questionnaire for differential diagnosis of pain syndromes associated to a neuropathic or somatic componentCut-off point in the DN4 questionnaire optimizing the sensitivity and specificity values for discriminating between peripheral neuropathic pain (excluding patients with mixed pain and central neuropathic pain) and non-neuropathic pain.Back to article page