Chronic pain in the community: A survey in a township in Mthatha, Eastern Cape, South Africa

Background: Comprehensive information is needed on the epidemiology and burden of chronic pain in the population for the development of appropriate health interventions. This study aimed to determine the prevalence, severity, risk indicators and responses of chronic pain among adults in Ngangelizwe, Mthatha, South Africa. Method: A cross-sectional survey utilising structured interviews of a sample of adult residents was used. Interviews elicited information on socio-demographic characteristics, general health status, and the prevalence, duration, frequency, severity, activity limitation and impact of chronic pain. Results: More than 95% (n = 473) of the sampled adults participated in the study. Of these, 182 [38.5%, 95% confidence interval (CI): 36.3-42.5%] reported chronic pain in at least one anatomical site. The most common pain sites were the back and head. The median pain score was 5 on a scale of 0 to 10 [interquartile range (IQR) = 4-7] and the median number of sites of pain was 1 (IQR = 1-2). Female gender [odds ratio (OR) = 2.6, 95% CI: 1.7-3.9] and being older than 50 years of age (OR = 3.5, 95% CI: 2.6-4.1) were identified as risk indicators for chronic pain in the sample. Over 65% of respondents reported that they self-treated; 92.1% had consulted with a doctor or nurse, 13.6% consulted a traditional healer, and 34.5% consulted a pharmacist because of their pain. Despite this, over 50% reported that relief of their pain was transient. Conclusion: Chronic pain is a common general complaint in this community, but there is a need for focused attention on women and the elderly.Department of HE and Training approved lis

Pain as a reason for primary care visits: cross-sectional survey in a rural and periurban health clinic in the Eastern Cape, South Africa

Background: The burden of pain in primary care has not been described for South Africa. This study aimed to determine the prevalence of pain in primary care and to characterise pain among adult patients attending a rural and a periurban clinic in the Eastern Cape (EC) Province. Method: cross-sectional descriptive survey was conducted among adult patients attending a rural and periurban clinic over four days. Consecutive patients were asked whether they were in the clinic because of pain and whether the pain was the major reason for their visit. Pain was characterised using an adaptation of the Brief Pain Inventory and the Pain Disability Index. The prevalence percentage and the 95% confidence interval (CI) of pain were estimated, and the relationship with demographic variables was determined at a significance level of P < 0.05. Results: Seven hundred and ninety-six adult patients were interviewed, representing a response rate of 97.4%. Almost three-quarters (74.6%; 95% CI: 63.2-81.4%) reported visiting the clinic because of pain. Pain was the primary reason for 393 (49.4%; 95% CI: 32.1-61.0%) visits and was secondary in 201 (25.3%; 95% CI: 12.8-33.7%) visits. The common sites of pain were the head, back and chest. The median pain score was eight on a scale of 0-10 (interquartile range: 6-8). Respondents experienced limitations in a number of activities of daily living as a result of pain. Conclusion: Pain is a central problem in public primary care settings in the EC Province and must therefore be a priority area for primary care research. Strategies are needed to develop to improve pain management at primary care level in the province.Department of HE and Training approved lis

Prevalence and risk indicators of chronic pain in a rural community in South Africa

Background: Despite the acknowledgement that chronic pain may be a problem for adults in rural settings, there is a lack of epidemiological investigations on its occurrence in rural South Africa. Objectives: To estimate the prevalence of chronic pain among adults in a rural community in South Africa and characterize the localization, severity, risk indicators and responses of pain sufferers. Methods: Cross-sectional analytical study using face-to-face interviews. Interviews elicited information on socio-demographic characteristics, general health status and presence of pain. Among those reporting pain, the duration, frequency, severity, activity limitation and impact was determined. Univariate statistics were used to describe the prevalence of chronic pain while bivariable χ2 tests and multivariable logistic regression models were used to assess the relationship of socio-demographic characteristics and reported health status with chronic pain. Results: A total of 394 adults were interviewed representing a response rate of 92.8%. Of these, 169 (42.9%; 95% CI: 37.4%-47.1%) reported suffering from chronic pain. The common sites were the back, knee, ankles, head and shoulders. The median pain score was 6 on a scale of 0-10 (IQR= 5-8) and the median number of sites of pain was 1 (IQR= 1-2). The type of pain slightly varied with age with younger adults reporting more back pain and headaches while older people reported more joint pain. Female gender (adjusted odds-ratio AOR= 2.2, 95% CI: 1.9-2.8) and being older than 50 years (AOR= 3.1, 95% CI:2.7-3.9) were identified as risk indicators for chronic pain in the sample. Respondents reported that they self-treated (88.3%); consulted with a doctor or nurse (74.3%); traditional-healer (24.5%) and spiritual-healer (4%). Most respondents (63.4%) reported only transient relief of their pain. Conclusions: Chronic pain is an important health problem in the surveyed community. Further comparative studies on the relationship with risk factors are needed meanwhile interventions targeting females and the elderly are recommended

Deep and superficial masseter muscle blood flow in women.

PurposeAlthough changes in blood perfusion have been described as being associated with temporomandibular disorder (TMD) myofascial pain, very little is known about blood flow levels in the deep and superficial masseter muscle. This study investigated blood flow in deep and superficial sites of six healthy female participants at baseline and during intermittent and continuous biting exercises and recovery.Materials and methodsBlood flow was monitored unilaterally using a single-fiber probe laser Doppler flowmeter. The blood flow was continuously monitored at baseline and during two biting exercises: (a) intermittent at 25%, 50%, and 100% maximum voluntary bite force for 30 seconds each followed by 90 seconds rest between each biting level and (b) continuous biting at similar maximum voluntary bite force levels followed by 90 seconds rest.ResultsThere was significantly higher blood flow in the deep sites compared to the superficial sites (p &lt; 0.001) and a significant increase in blood flow during biting compared to baseline (p &lt; 0.001). There were no significant changes in blood flow among the three levels of biting, between the intermittent and continuous exercises, or from baseline blood flow compared to recovery.ConclusionsThis study showed regional differences in masseter muscle blood flow, perhaps related to differences in muscle fiber type and pattern of muscle fiber recruitment

Deep and superficial masseter muscle blood flow in women.

PurposeAlthough changes in blood perfusion have been described as being associated with temporomandibular disorder (TMD) myofascial pain, very little is known about blood flow levels in the deep and superficial masseter muscle. This study investigated blood flow in deep and superficial sites of six healthy female participants at baseline and during intermittent and continuous biting exercises and recovery.Materials and methodsBlood flow was monitored unilaterally using a single-fiber probe laser Doppler flowmeter. The blood flow was continuously monitored at baseline and during two biting exercises: (a) intermittent at 25%, 50%, and 100% maximum voluntary bite force for 30 seconds each followed by 90 seconds rest between each biting level and (b) continuous biting at similar maximum voluntary bite force levels followed by 90 seconds rest.ResultsThere was significantly higher blood flow in the deep sites compared to the superficial sites (p &lt; 0.001) and a significant increase in blood flow during biting compared to baseline (p &lt; 0.001). There were no significant changes in blood flow among the three levels of biting, between the intermittent and continuous exercises, or from baseline blood flow compared to recovery.ConclusionsThis study showed regional differences in masseter muscle blood flow, perhaps related to differences in muscle fiber type and pattern of muscle fiber recruitment

Immediately loaded implants in a patient with involuntary mandibular movements: a clinical report.

Immediately loaded implant prostheses have been used to successfully rehabilitate completely edentulous arches. Risk factors for successful treatment have not included involuntary mandibular movements. The treatment was completed on a patient with a history of neuroleptic medications who had remaining mandibular teeth extracted and then developed involuntary mandibular movements. The patient was dissatisfied with a mandibular removable prosthesis and wanted a fixed prosthesis. The immediate implant loading of a complete arch fixed prosthesis was delivered, and the patient lost 3 of the 6 implants. The patient continued to have problems with her definitive prostheses as the symptoms of her involuntary mandibular movements worsened

Chronic Pain in a Biracial Cohort of Young Women.

This is a longitudinal study of a large US biracial community cohort of 732 young women - 50% African-American and 50% Caucasian - specifically investigating incidence, remission, and progression of, as well as factors associated with common chronic pains (back, head, face, chest and abdomen). The results show back, head and abdominal pains were the most common, severe and persistent pains. Facial pain, although less common and severe, was the only pain presenting significant racial differences with Caucasians having higher prevalence, incidence and persistence; incidence per 1000 person-years was 58 for Caucasians and 18 for African-Americans while remission per 1000 person-years was 107 for Caucasians and 247 for African-Americans (p&lt;0.05). Risk factors associated with incidence (I) differed from those associated with persistence(P), perhaps due to the young age and shorter pain duration in this population. Face pain incidence, but not persistence for example, was associated with student status, fatigue, perceived stress and general health. Depression does not seem to be associated with any of these pains. However, increased number of existing pain sites was related to subsequent increase chance of developing new pain (I) or maintaining the existing pain (P)