Sensory characteristics according to chronic diseases and chronic pain in adults: cross-sectional study.

Aim: To investigate somatosensory, gustative and olfactory characteristics of subjects according to their chronic diseases and the presence of chronic pain complaints. Materials & methods: A total of 254 chronic pain patients and 52 healthy subjects were evaluated with a clinical and sensory systematized evaluation. Statistical analysis consisted of Fisher's exact, Student's t-tests, Pearson's co-efficient and multivariate nonlinear/logistic regressions. Results: Patients had more chronic diseases (p < 0.001) than healthy subjects. Chronic pain was associated with vibratory hypoesthesia (p = 0.047) and sour hypergeusia (p = 0.001) and several chronic diseases correlated with sensory features. Hyposmia was strongly associated with chronic pain symptoms, chronic diseases and cardiovascular disease. Conclusion: The sensory findings observed suggest the need for further investigation about the overlap between the olfactory function, pain chronification, chronic diseases and cognitive impairment in these patients.

Balloon compression vs radiofrequency for primary trigeminal neuralgia: a randomized, controlled trial.

ABSTRACT: Surgical procedures are necessary in up to 50% of trigeminal neuralgia patients. Although radiofrequency (RF) is more widely used, it is associated with high intraprocedural costs and long technical learning time. Other simpler procedures such as balloon compression (BC) require a lower training period and have significant lower costs. We evaluated the effects of BC and RF in pain control in primary trigeminal neuralgia in a randomized, double-blinded, head-to-head trial. Individuals were randomly allocated in 1 of 2 groups: BC and RF. Throughout pain, psychological and quality of life measurements were performed at baseline and after surgery. The main outcome was the worst pain in the last 24 hours (0-10) at 6 months postoperatively. After the inclusion of half of the estimated sample, a preplanned interim analysis was performed when 33 patients (62.1 ± 9.4 y.) completed the study. Pain intensity (confidence interval [CI] 95% 0.6 to 3.8, and -0.6 to 2.2, for BC and RF) did not significantly differ. Complications, interference of pain in daily life (CI 95% -0.1 to 2.3 and -0.4 to 2.3, for BC and RF), neuropathic pain symptoms (CI 95% 1.7 to 3.6 and 3.0 to 5.7, for BC and RF), mood (CI 95% 4.8 to 11.5 and 5.5 to 15.1, BC and RF, respectively), medication use, and quality of life (CI 95% 80.4 to 93.1 and 83.9 to 94.2, for BC and RF) were also not different. Radiofrequency presented more paresthetic symptoms than BC at 30 days after intervention. Based on these results, the study was halted due to futility because BC was not superior to RF.

Acupuncture treatment for idiopathic trigeminal neuralgia: A longitudinal case-control double blinded study.

OBJECTIVE: To evaluate the treatment effect of acupuncture on patients with idiopathic trigeminal neuralgia (ITN) by case-control longitudinal blinded study. METHODS: Sixty ITN patients and 30 healthy subjects were included. The ITN patients were randomly assigned to acupuncture group (15 cases), sham-acupuncture group (15 cases) and carbamazepine group (30 cases), respectively. Clinical orofacial evaluation (including pain intensity and medication doses), research diagnostic criteria for temporomandibular disorders (RDC/TMD) and Helkimo indexes (for functional evaluation of the masticatory system), and quantitative sensory testing for sensory thresholds (gustative, olfactory, cold, warm, touch, vibration and superficial and deep pain) were evaluated before treatment, immediately after treatment, and 6 months after treatment. RESULTS: The mean pain intensity by the Visual Analogue Scale only decreased in the acupuncture group at the last evaluation (P=0.012). Patients in the sham-acupuncture group had an increase in carbamazepine doses according to the prescriptions (P<0.01). There was a reduction in secondary myofascial pain and mandibular limitations at the acupuncture and sham-acupuncture groups, however only the acupuncture group kept the changes after 6 months (P<0.01, P=0.023). There was a decrease in mechanical thresholds in the acupuncture group (tactile, P<0.01; vibration, P=0.027) and an increase in deep pain thresholds in both acupuncture and sham-acupuncture groups (P=0.013). CONCLUSIONS: Acupuncture can be an option in the treatment of ITN due to its analgesic effect in both ITN and secondary myofascial pain associated with it.

Depression, sexuality and fibromyalgia syndrome: clinical findings and correlation to hematological parameters.

OBJECTIVE: To investigate sexuality and depression in women with FM compared with controls and to correlate the findings with hematological parameters. METHODS: 33 women with FM and 19 healthy women were included and evaluated with the following instruments: Female Sexual Function Index, Beck Inventory, Visual Analogue Scale, medical history and laboratory exams. RESULTS: The prevalence of sexual dysfunction (P = 0.007) and depression (P < 0.001) were higher in the study group than in the control group; they were positively correlated (P = 0.023). The study group showed lower serum concentrations of testosterone, free T4, antinuclear factor, and lower blood hemoglobin and hematocrit. CONCLUSIONS: FM was associated with high scores of sexual dysfunction and depression, and there were correlations with hematological parameters. We suggest the involvement of immune-inflammatory mediators and FM, which need further investigation to understand their role in FM syndrome and its comorbidities.

Depression, sexuality and fibromyalgia syndrome: clinical findings and correlation to hematological parameters / Depressão e sexualidade na síndrome fibromiálgica: achados clínicos e correlação com parâmetros hematológicos

ABSTRACT Fibromyalgia (FM) is characterized by chronic pain and comorbidities. Objective To investigate sexuality and depression in women with FM compared with controls and to correlate the findings with hematological parameters. Methods 33 women with FM and 19 healthy women were included and evaluated with the following instruments: Female Sexual Function Index, Beck Inventory, Visual Analogue Scale, medical history and laboratory exams. Results The prevalence of sexual dysfunction (P = 0.007) and depression (P < 0.001) were higher in the study group than in the control group; they were positively correlated (P = 0.023). The study group showed lower serum concentrations of testosterone, free T4, antinuclear factor, and lower blood hemoglobin and hematocrit. Conclusions FM was associated with high scores of sexual dysfunction and depression, and there were correlations with hematological parameters. We suggest the involvement of immune-inflammatory mediators and FM, which need further investigation to understand their role in FM syndrome and its comorbidities.

RESUMO Fibromialgia (FS) é caracterizada por dor e comorbidades. Objetivo investigar depressão e sexualidade em mulheres com FS comparadas a controles, e correlacionar os achados com parâmetros hematológicos. Métodos 33 mulheres com FS e 19 controles saudáveis foram incluídas e avaliadas através dos seguintes instrumentos: Índice de Função Feminina Sexual, Inventário de Beck, escala visual analógica, história médica e exames laboratoriais. Resultados A prevalência de disfunção sexual (P = 0,007) e depressão (P < 0,001) foram maiores no grupo de estudo do que nos controles; também houve correlação positiva (P = 0,023). O grupo de estudo apresentou menor concentração sérica de testosterona, T4 livre, fator antinuclear e menos concentração de hemoglobina e hematócrito. Conclusões A FS associou-se com altos índices de disfunção sexual e depressão, e houve correlação com os parâmetros hematológicos estudados. Sugere-se o envolvimento de mediadores imuno-inflamatórios na FS, que necessita de maior investigação para a compreensão dos mecanismos tanto na FS e quanto em suas comorbidades.

Functional and sensory evaluation of patients with idiopathic trigeminal neuralgia: comparison with controls.

BACKGROUND: Idiopathic trigeminal neuralgia (ITN) can be associated with orofacial and sensory comorbidities. OBJECTIVE: To evaluate the masticatory functional and sensory characteristics of patients with ITN compared with controls. METHODS: We enrolled 119 patients and 30 healthy controls. They were evaluated with a systematic protocol: clinical orofacial evaluation questionnaire; a systematic approach of the mandibular function and the investigation of musculoskeletal comorbidities by the research diagnostic criteria for temporomandibular disorders (RDC/TMD) and the Helkimo indexes; and quantitative sensory testing (corneal reflex and gustative, olfactory, thermal, mechanical and pain thresholds). RESULTS: The study group had more loss of vertical dimension than the controls (p=0.011) and restriction of the maximum mouth opening (p=0.024); they had more pain on mandibular movements (p=0.001), limitation of mandibular function (p<0.001), masticatory discomfort (p<0.001) and myofascial pain (p=0.001). Occlusion Helkimo index was lower in controls than patients. The study group had high tactile (p=0.025), warm (p=0.020) and cold (p=0.003) thresholds. CONCLUSION: ITN may cause severe mandibular limitations that can be associated with the pain episodes and with sensory abnormalities. These findings indicate the affection of small and large nerve fibers and support the neuropathic nature of ITN. Sensory alterations can be part of the natural history of ITN and can be associated with the previous treatments including medication. They cause a high impact in quality of life.

Somatosensory investigation of patients with orofacial pain compared with controls.

The objective of this study was to investigate the sensorial characteristics of orofacial pain in patients compared with control subjects. A total of 336 subjects (282 patients and 54 control subjects) were evaluated to identify their thermal (cold and warm), tactile, and pain thresholds. Numbness was reported by 61.7% of the patients (p<0.001). Patients with trigeminal postherpetic neuralgia and burning mouth syndrome showed loss of thermal perception; patients with postherpetic neuralgia, burning mouth syndrome, and posttraumatic painful neuropathy had a decrease in tactile perception compared with the control subjects (p<0.001). In conclusion, other sensorial modalities besides pain are affected by neuropathic orofacial pain; these findings can help in the understanding of the pathophysiological mechanisms in orofacial pain.

Quantitative sensory testing in trigeminal traumatic neuropathic pain and persistent idiopathic facial pain.

The objective of this article was to investigate, with a systematic protocol of quantitative sensory testing, patients with persistent idiopathic facial pain (PIFP) and others with trigeminal traumatic neuropathic pain (TTN) compared to controls. Thirty patients with PIFP, 19 with TTN, and 30 controls were evaluated on subjective numbness and dysesthesia and with a systematic protocol of quantitative sensory testing for thermal evaluation (cold and warm), mechanical detection (touch and pinpricks for mechanical pain), superficial pain thresholds, and corneal reflex. We found that PIFP and TTN had numbness and dysesthesia higher than controls (p<0.001 and p=0.003), and that in both of them mechanical pain by pinpricks detection was abnormal intra and extra orally at the mandibular branch (p<0.001). Cold, warm, and tactile detections and pain thresholds were similar among the groups. Corneal reflex was abnormal in TTN (p=0.005). This study supports neuropathic mechanisms involving pain processing in PIFP and that the criterion on absence of sensorial variations in PIFP should be revised.

Quantitative sensory testing in trigeminal traumatic neuropathic pain and persistent idiopathic facial pain / Teste sensitivo quantitativo em dor neuropática trigeminal pós-traumática e dor facial idiopática persistente

The objective of this article was to investigate, with a systematic protocol of quantitative sensory testing, patients with persistent idiopathic facial pain (PIFP) and others with trigeminal traumatic neuropathic pain (TTN) compared to controls. Thirty patients with PIFP, 19 with TTN, and 30 controls were evaluated on subjective numbness and dysesthesia and with a systematic protocol of quantitative sensory testing for thermal evaluation (cold and warm), mechanical detection (touch and pinpricks for mechanical pain), superficial pain thresholds, and corneal reflex. We found that PIFP and TTN had numbness and dysesthesia higher than controls (p<0.001 and p=0.003), and that in both of them mechanical pain by pinpricks detection was abnormal intra and extra orally at the mandibular branch (p<0.001). Cold, warm, and tactile detections and pain thresholds were similar among the groups. Corneal reflex was abnormal in TTN (p=0.005). This study supports neuropathic mechanisms involving pain processing in PIFP and that the criterion on absence of sensorial variations in PIFP should be revised.

O objetivo deste artigo foi investigar, com um protocolo sistemático de testes sensitivos quantitativos, pacientes com dor facial idiopática persistente (DFIP) e outros com dor neuropática trigeminal traumática (DNTT) comparado aos controles. Trinta pacientes com DFIP, 19 com DNTT e 30 controles foram avaliados quanto à dormência e à disestesia subjetiva e por meio de um protocolo sistemático de testes sensitivos quantitativos, que incluiu avaliação térmica (frio e quente), detecção mecânica (táctil e alfinetes), limites de dor superficial e reflexo córneo-palpebral. Foi observado que os pacientes apresentaram mais dormência e disestesia do que os controles (p<0,001 e p=0,003), além de mais anormalidades intra e extraorais no ramo mandibular (p<0,001). As alterações de calor, frio, dor e tato foram semelhantes entre os grupos. O reflexo córneo-palpebral foi anormal somente no grupo com DNTT (p=0,005). Este estudo suporta mecanismos de dor neuropática envolvidos no processamento da DFIP, e o critério de ausência de variações sensoriais nesta deve ser revisto.

High prevalence of orofacial complaints in patients with fibromyalgia: a case-control study.

OBJECTIVE: The aim of this study was to investigate the orofacial complaints and characteristics of patients with fibromyalgia syndrome (FS) compared with controls. STUDY DESIGN: We evaluated 25 patients diagnosed with FS compared with 25 gender- and age-matched controls by using a detailed clinical protocol for orofacial pain diagnosis and dental examination. RESULTS: FS patients had a higher frequency of temporomandibular disorders (TMD), masticatory complaints, pain with mandibular movements, and pain upon palpation of the head and neck area. There were no significant differences related to the dental exam. CONCLUSIONS: Orofacial complaints including TMD may be present either as symptoms of FS or as a comorbidity associated with this condition. A comprehensive evaluation of patients with FS is necessary to identify the need for specific treatments for orofacial complaints. Future studies, especially those with longitudinal design, should clarify whether a cause-effect relationship exists between orofacial complaints and fibromyalgia.

Xerostomia and salivary flow in patients with orofacial pain compared with controls.

OBJECTIVES: Pain in the orofacial region is frequently reported by patients in dental and medical offices. Facial pain, headache, masticatory abnormalities and other complaints often become chronic and may be associated with local disturbances, such as xerostomia and teeth abnormalities. The objective of this study was to investigate salivary flow and xerostomia in patients with orofacial pain. DESIGN: This was a case-control study; we evaluated 82 patients with chronic orofacial pain compared with 56 healthy subjects using a Clinical Pain Questionnaire (pain characteristics, duration, intensity and descriptors), complete dental examination (including static and dynamic evaluation of the jaw) and a Xerostomia Inventory. The salivary flow was quantitatively evaluated. Data was compared through Pearson's chi-square, Fisher's exact, analysis of variance (ANOVA) 1 factor and Mann-Whitney tests. RESULTS: Patients often had temporomandibular disorder (TMD) (P=0.001) and pain during facial (P<0.001) and neck palpation (P=0.002). There were no differences in dental examination or other structural aspects of the jaw between the groups. There were more complaints associated with xerostomia in the study group, including burning sensation in the oral mucosa (P=0.003), in the throat (P=0.035) and in the stomach (P=0.050). Patients had lower salivary flow (P=0.008). CONCLUSIONS: Orofacial pain patients need to be evaluated with regard to their salivary function, which was often found abnormal in this sample and may have contributed to the complaints of these patients. Assessing salivary flow and xerostomia may help in the treatment of chronic orofacial pain.

Severe psychosocial compromise in idiopathic trigeminal neuralgia: case report.

OBJECTIVE: This article describes a 60-year-old man with 17 years of idiopathic trigeminal neuralgia (ITN) which affected tooth brushing for 6 years, causing severe dental complications and psychosocial problems. METHODS: Case report. RESULTS: Following ITN diagnosis, this patient underwent neurosurgery (microcompression of the trigeminal ganglion with a balloon) with immediate relief, but after three months, pain recurred and was accompanied by dysesthesia and periodontal disease. After dental treatment, he had complete alleviation of pain and no further need of medication over the following 3 years. The intense suffering of this patient represents the importance of a multidisciplinary evaluation for pain-caused secondary complications. CONCLUSION: ITN is a simple diagnosis but may have complex course. Appropriately trained health professionals are necessary to evaluate and treat these patients.

Trigeminal pain and quantitative sensory testing in painful peripheral diabetic neuropathy.

OBJECTIVE: To evaluate patients with Diabetes Mellitus type 2 and painful peripheral neuropathy in order to investigate oral complaints and facial somatosensory findings. RESEARCH DESIGN AND METHODS: Case-control study; 29 patients (12 women, mean age 57.86 yo) with Diabetes Mellitus type 2 and 31 age-gender-matched controls were evaluated with a standardized protocol for general characteristics, orofacial pain, research diagnostic criteria for temporomandibular disorders, visual analogue scale and McGill Pain questionnaire, and a systematic protocol of quantitative sensory testing for bilateral facial sensitivity at the areas innervated by the trigeminal branches, which included the thermal detection by ThermoSensi 2, tactile evaluation with vonFrey filaments, and superficial pain thresholds with a superficial algometer (Micromar). Statistical analysis was performed with Wilcoxon, chi-square, confidence intervals and Spearman (p<0.05). RESULTS: Orofacial pain was reported by 55.2% of patients, and the most common descriptor was fatigue (50%); 17.2% had burning mouth. Myofascial temporomandibular disorders were diagnosed in 9 (31%) patients. The study group showed higher sensory thresholds of pain at the right maxillary branch (p=0.017) but sensorial differences were not associated with pain (p=0.608). Glycemia and HbA(1c) were positively correlated with the quantitative sensory testing results of pain (p<0.05) and cold (p=0.044) perceptions. Higher pain thresholds were correlated with higher glycemia and glycated hemoglobin (p=0.027 and p=0.026). CONCLUSIONS: There was a high prevalence of orofacial pain and burning mouth was the most common complaint. The association of loss of pain sensation and higher glycemia and glycated hemoglobin can be of clinical use for the follow-up of DM complications.

O eixo biológico do curso de Gerontologia Escola de Artes, Ciências e Humanidades – Universidade de São Paulo / The biological axis of the Gerontology Course School of Arts, Sciences and Humanities - University of São Paulo

O eixo biológico do Curso de Gerontologia da EACH-USP compreende disciplinas que exploram a construção social e histórica do conhecimento biológico, fundamenta a formação profissional com princípios da estrutura e do funcionamento dos diferentes sistemas orgânicos e introduz conceitos das principais doenças que acometem os idosos. O raciocínio científico e o crítico são estimulados, abrindo possibilidades para um processo de aprendizagem ativo, cooperativo, integrado e interdisciplinar.AU

The biological axis of the Gerontology Course of EACH-USP is composed of subjects that explore the social and historical construction of biological knowledge, provide the fundamental principles of the structure and functioning of the different organic systems and also study the main diseases that affect the elderly. Scientific and critical reasoning are stimulated, giving rise do active, cooperative, integrated and multidisciplinary learning.AU

O eixo biológico do curso de gerontologia escola de artes, ciências e humanidades: Universidade de São Paulo / The biological axis of the gerontology course school of arts, sciences and humanities: University of São Paulo

O eixo biológico do Curso de Gerontologia da EACH-USP compreende disciplinas que exploram a construção social e histórica do conhecimento biológico, fundamenta a formação profissional com princípios da estrutura e do funcionamento dos diferentes sistemas orgânicos e introduz conceitos das principais doenças que acometem os idosos. O raciocínio científico e o crítico são estimulados, abrindo possibilidades para um processo de aprendizagem ativo, cooperativo, integrado e interdisciplinar.

The biological axis of the Gerontology Course of EACH-USP is composed of subjects that explore the social and historical construction of biological knowledge, provide the fundamental principles of the structure and functioning of the different organic systems and also study the main diseases that affect the elderly. Scientific and critical reasoning are stimulated, giving rise do active, cooperative, integrated and multidisciplinary learning.

Refractory craniofacial pain: is there a role of periodontal disease as a comorbidity?

OBJECTIVE: To evaluate the influence of the periodontal disease (PD), a chronic infection, in patients with chronic craniofacial pain complaints. METHOD: Twenty patients with chronic craniofacial pain and PD (CFP group) and 20 patients with PD (PD group) were assessed before and after periodontal treatment (baseline, 30 and 180 days after treatment). The parameters evaluated were: plaque index, bleeding index, clinical probe insertion, Visual Analogic Scale (VAS) for pain intensity and Numerical Rating Scale (NRS) and Verbal Rating Scale (VRS) for the 'chief complaint'. RESULTS: After 180 days PD was controlled in both groups (p<0.001); the VAS decreased in CFP group (p<0.001); 'chief complaint' improved (p=0.005 and p=0.027, respectively in CFP and PD group). VRS showed improvement between the groups in 30 (p=0.004) and 180 days (p=0.001). CONCLUSION: These results suggest a possible influence of periodontal disease, as a comorbidity, in refractory craniofacial pain patients and in their pain levels.

Refractory craniofacial pain: is there a role of periodontal disease as a comorbidity? / Dor refratária crânio-facial: há algum papel para a doença periodontal como morbidade associada?

OBJETIVE: To evaluate the influence of the periodontal disease (PD), a chronic infection, in patients with chronic craniofacial pain complaints. METHOD: Twenty patients with chronic craniofacial pain and PD (CFP group) and 20 patients with PD (PD group) were assessed before and after periodontal treatment (baseline, 30 and 180 days after treatment). The paramenters evaluated were: plaque index, bleeding index, clinical probe insertion, Visual Analogic Scale (VAS) for pain intensity and Numerical Rating Scale (NRS) and Verbal Rating Scale (VRS) for the "chief complaint". RESULTS: After 180 days PD was controlled in both groups (p<0.001); the VAS decreased in CFP group (p<0.001); "chief complaint" improved (p=0.005 and p=0.027, respectively in CFP and PD group). VRS showed improvement between the groups in 30 (p=0.004) and 180 days (p=0.001). CONCLUSION: These results suggest a possible influence of periodontal disease, as a comorbidity, in refractory craniofacial pain patients and in their pain levels.

OBJETIVO: Avaliar a influência da doença periodontal (DP) em pacientes com queixas de dores crônicas crânio-faciais. MÉTODO: Vinte pacientes com dor crônica crânio-facial e DP (CFP group) e 20 pacientes com DP (PD group) foram avaliados antes e depois do tratamento periodontal (baseline, 30 e 180 dias). Avaliações: índice de placa, índice de sangramento gingival, inserção clínica de bolsa, Escala Visual Analógica (VAS) para a dor, Escalas Numérica (NRS) e Verbal (VRS) para as "queixas principais". RESULTADOS: Após 180 dias a DP foi controlada em ambos os grupos (p<0,001); a VAS reduziu no CFP group (p<0,001); a "queixa principal" melhorou (p=0,005 e p=0,027, respectivamente nos grupos CFP e PD). A VRS mostrou diferença entre os grupos em 30 (p=0,004) e 180 dias (p=0,001). CONCLUSÕES: Estes resultados sugerem a provável influência da doença periodontal, como morbidade associada, nos níveis de dor de pacientes com dores crônicas crânio-faciais.

Percutaneous radiofrequency rhizotomy and neurovascular decompression of the trigeminal nerve for the treatment of facial pain / Rizotomia percutânea por radiofreqüência e a descompressão neurovascular do nervo trigêmeo no tratamento das algias faciais

OBJECTIVE: To determine the outcomes of 354 radiofrequency rhizotomies and 21 neurovascular decompressions performed as treatment for 367 facial pain patients (290 idiopathic trigeminal neuralgia, 52 symptomatic trigeminal neuralgia, 16 atypical facial pain, 9 post-herpetic neuralgia). METHOD: Clinical findings and surgery success rate were considered for evaluation. A scale of success rate was determined to classify patients, which considered pain relief and functional/sensorial deficits. RESULTS: Radiofrequency rhizotomy was performed in 273 patients with idiopathic trigeminal neuralgia and in all other patients, except for trigeminal neuropathy; neurovascular decompression was performed in 18 idiopathic trigeminal neuralgia patients; 100 percent idiopathic trigeminal neuralgia, 96.2 percent symptomatic trigeminal neuralgia, 37.5 percent atypical facial pain and 88.9 percent post-herpetic neuralgia had pain relief. CONCLUSION: Both techniques for idiopathic trigeminal neuralgia are usefull. Radiofrequency rhizotomy was also efficient to treat symptomatic facial pain, and post-herpetic facial pain, but is not a good technique for atypical facial pain.

OBJETIVO: Determinar eficácia e achados pós-operatórios após 354 rizotomias por radiofreqüência e 21 descompressões neurovasculares como tratamento de 367 pacientes com dor facial (290 neuralgia idiopática do trigêmeo, 52 neuralgia sintomática do trigêmeo, 16 dor facial atípica, 9 neuralgia pós-herpética). MÉTODO: Achados clínicos e taxa de sucesso das cirurgias foram considerados para a avaliação. Uma escala avaliando alívio da dor e complicações sensoriais e funcionais foi utilizada para classificar os pacientes. RESULTADOS: A rizotomia por radiofreqüência foi realizada em 273 pacientes com neuralgia idiopática do trigêmeo e em todos os outros pacientes, exceto neuropatia trigeminal; descompressão neurovascular foi realizada em 18 pacientes com neuralgia idiopática do trigêmeo; 100 por cento dos pacientes com neuralgia idiopática do trigêmeo, 96.2 por cento dos pacientes com neuralgia sintomática, 37.5 por cento dos pacientes com dor facial atípica e 88.9 por cento dos doentes com neuralgia pós-herpética tiveram alívio da dor. CONCLUSÃO: Ambas as técnicas são úteis para a neuralgia idiopática do trigêmeo. A rizotomia por radiofreqüência foi também eficiente para tratar neuralgia sintomática do trigêmeo e pós-herpética, mas não foi uma boa técnica como tratamento da dor facial atípica.

Percutaneous radiofrequency rhizotomy and neurovascular decompression of the trigeminal nerve for the treatment of facial pain.

OBJECTIVE: To determine the outcomes of 354 radiofrequency rhizotomies and 21 neurovascular decompressions performed as treatment for 367 facial pain patients (290 idiopathic trigeminal neuralgia, 52 symptomatic trigeminal neuralgia, 16 atypical facial pain, 9 post-herpetic neuralgia). METHOD: Clinical findings and surgery success rate were considered for evaluation. A scale of success rate was determined to classify patients, which considered pain relief and functional/sensorial deficits. RESULTS: Radiofrequency rhizotomy was performed in 273 patients with idiopathic trigeminal neuralgia and in all other patients, except for trigeminal neuropathy; neurovascular decompression was performed in 18 idiopathic trigeminal neuralgia patients; 100% idiopathic trigeminal neuralgia, 96.2% symptomatic trigeminal neuralgia, 37.5% atypical facial pain and 88.9% post-herpetic neuralgia had pain relief. CONCLUSION: Both techniques for idiopathic trigeminal neuralgia are usefull. Radiofrequency rhizotomy was also efficient to treat symptomatic facial pain, and post-herpetic facial pain, but is not a good technique for atypical facial pain.