Articles: function.
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The present study sought to derive an algorithm using factor analysis and structural equation modeling (SEM) to describe headache and orofacial pain patients using measures of behavioral and psychological functioning. This investigation further examined whether the underlying factor structure differed in 3 presumed distinct diagnostic categories: myofascial, neuropathic, and neurovascular pain. ⋯ Analysis derived a 3-factor solution. The factors were Pain Impact, Illness Conviction, and Depression. SEM revealed the critical causal pathway showing that Depression determined Illness Conviction and Pain Impact. We conclude that the main target for pain treatment is depression. No differences in factor structure were found for the 3 diagnostic categories of myofascial, neuropathic, or neurovascular pain. This suggests that psychological processes are similar in chronic headache and orofacial pain patients despite their presumed distinct underlying pathophysiological mechanisms. SME is a powerful methodology to construct causal models that has been underutilized in the pain literature.
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The purpose of this research trial is to assess the effectiveness and tolerability of tizanidine in neuropathic pain. In an open-label study, patients with neuropathic pain received 1 to 4 mg of tizanidine once daily for 7 days, followed by weekly dose escalation of 2 to 8 mg to his/her effective or maximum tolerated dose or a maximum of 36 mg over an 8-week period. Treatment effects were assessed, using average weekly pain scores as well as biweekly scores for patient global assessment of pain relief, the neuropathic pain scale, and wisconsin brief pain inventory. ⋯ Tizanidine might be an effective treatment for neuropathic pain, offering an alternative for patients poorly responsive to other medications. A larger, randomized placebo-controlled trial is recommended. In addition, comparative studies with alternative agents should be sought.
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Complex regional pain syndrome-reflex sympathetic dystrophy (CRPS/RSD) is a complex pain-dysfunction syndrome of unknown cause that typically affects a single extremity. Changes are usually more marked peripherally. There are no generally accepted clinical diagnostic criteria or laboratory studies for CRPS/RSD; our current state of knowledge allows the diagnosis to be made only on clinical grounds. ⋯ Treatment should be immediate, aggressive, and directed toward restoration of full function of the extremity. Various analgesic techniques may be necessary to permit the patient to comply with the rehabilitation program. This program is best carried out in a comprehensive interdisciplinary setting, with a primary emphasis on functional restoration.
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Chronic neck pain, headache, and arm pain are some of the most common patient complaints confronting today's health care provider. Chronic neck pain is reported to be a frequency symptom in 34% of the general population with 14% of the general population reporting neck pain that lasted for more than 6 months. The magnitude of the problem is demonstrated by increase of cervical spine surgery by 45% and cervical fusion by 70% over a ten year period from 1979 through 1988. ⋯ Neural blockade in the cervical spine, though introduced in 1912, lagged behind that of the lumbar spine. At the present time, neural blockade is an extremely popular tool for diagnostic purposes in evaluation of neck pain, even though it has not developed a definitive role in the management of chronic neck pain and associated syndromes. The object of this review is to focus on various aspects of neural blockade in the management of chronic neck pain and associated syndromes including its rationale, clinical effectiveness, indications, and complications.