The term "chronic chikungunya syndrome" covers multiple etiologies. Compliance with the French Society of Rheumatology recommendations, careful recording of patient histories, and serologic verification help prevent errors inherent to the epidemic context and ensure early therapeutic intervention for these patients. To avoid late initiation of treatment, patients should receive rheumatologic consultation as early as possible.
Objective: Chikungunya (CHIKV) is an arbovirus that causes acute, debilitating polyarthritis. Its diagnosis can be difficult for clinicians not used to managing joint diseases or detecting synovitis. Joint Doppler ultrasonography (DUS) is a simple, non-invasive examination, able to visualize synovitis. Its diagnostic and prognostic value in rheumatoid arthritis is well-established. Methods: Patients with serologically proven acute arbovirosis where included. Clinical examination and joint count were performed (DAS score). Ultrasound examination was performed by another clinicianexperienced in joint DUSwho also performed ultrasound joint score. Joints were examined by DUS in B-mode looking for: subcutaneous infiltration, effusion, tenosynovitis, erosion and Doppler signal. Results: In our experience, joint DUS is able to detect effusions in 92.8% of painful joints, with 28.3% of the effusions emitting a high-power Doppler signal. No erosion was observed. Subcutaneous inflammatory infiltration of the ankles (aseptic cellulitis) was found in 28.6% of patients. Conclusion: Joint DUS is able to detect objective signs responsible for joint pain, which can be useful for practitioners not accustomed to this type of pathology. It also makes possible distinction between articular and periarticular manifestations.
BackgroundRheumatoid arthritis (RA) is a disabling chronic disease, regarded as the most frequent inflammatory rheumatism in adults, with a prevalence estimated between 0.3 and 1%, and a feminine ascendancy. In metropolitan France this prevalence is estimated from 0.3% to 0.5% of the general population. No precise data is available for French West Indies, and the prevalence of RA in this population of African ancestry is poorly evaluated.ObjectivesThe objective of the study is to estimate RA prevalence in the FWI by a census forward-looking epidemiological survey in the hospital and liberal sectors for one year duration.MethodsIt is a unique tour with clinical examination, self-administered questionnaires and declaration. Secondary objectives are description of clinical and socio economical aspects of RA and cardiovascular comorbidities. We present the results for Martinique. Our survey was widely distributed (radio, press, patients' associations…) to ensure a good completeness. Data were analysed using SAS 9.3 software (SAS Institute Inc., Cary, NC, USA). Throrough descriptive analysis of collected variables was conducted. Crude prevalence rates were adjusted to a standard population of Martinique (nationwide census in 2010). The 95% CIs were calculated using the Poisson distribution.ResultsOur completeness is good. 538 RA were collected, giving a prevalence in Martinique of 0.184% of the adult population (290 000), respectively 0.049 for men and 0.292 for women. 44% of these patients are treated in private practice and 56% in hospital. This cohort is composed of 88% women and 12% men; 92% were born in Caribbean and 7.7% elsewhere. Patients self declared of Afro Caribbean origin in 92.7%, Caribbean White in 1.7%, caucasian in 3% and other in 2.1%. Their mean disease duration was 9.7±10 years. RF and ACPA were positive in 82.2% (FR+ 392, ACPA+349, 35% low level, 65% high level): CCP+FR+ in 306, FR+CCP- in 77, FR-CCP+ in 41, FR-CCP- in 96. 17% had extra articular manifestations. ACR1987 and ACR2010 criteria were pos in 94.4% and 78%. HAQ was <1 in 74%, >1and <2 in 20% and >2 in 3%. DAS28 were respectively <2.6 in 59%, <3.2 in 15.4%, <5.1 in 23% and >5.1 in 3%. Less than 5% are ever smoker. Parodontopathy is infrequent. Cardiovascular risk factors were noticed in 89,4% with a mean of 2 CVRF beside RA.ConclusionsThis work clarifies the low prevalence of RA in this population of African origin. Some characteristics as: reduced prevalence, strong female representation, strong seropositivity, high levels of anti-CCP, no tobacco, differentiate our patients from other populations and evoke another etiology than tobacco.Disclosure of InterestNone declared
Background:Spondyloarthritis is a polymorphic disease and the absence of diagnostic marker has led to propose diagnostic criteria for recognition. All the criteria, established in Caucasian populations, place at the center of the approach sacroiliac imaging and genetic terrain (HLA B27). For this reason, these criteria are not appropriate in populations lacking HLA B27. SPA is known to be rare in African populations and this rarity correlates with that of HLA B27.Prevalence of B27 in French West Indies is 2% (identical to the African populations).Objectives:We report clinical manifestations of SpA seen at the Fort de France University Hospital, with an emphasis on the so-called “non-radiographic SpA” (NRSPA).Methods:Adult patients with spondyloarthritis seen over a period of three consecutive months, were invited to participate in a survey and filled-in a self-administered questionnaire. The consulting rheumatologist specified the rheumatologic and extra-articular involvement, BASDAI score, HLAB27 data, markers of inflammation and imaging.Results:There were 93 patients, 47 with radiographic sacroilitis (RSPA) and 46 patients without but all - these 46 - had magnetic sacroilitis. This population is Afro-Caribbean for 98%. Mean age at onset of clinical signs is 38.5 ± 15.0 years and median age is 37.0 (13-77). An evocative family history is noted in 37%. All these 93 patients suffer from rachialgia.But the axial complaint is often secondary to the peripheral involvement. 3 patients have a mechanical spinal complaint. All the others have intermittent inflammatory complaint evolving by flares affecting all the spinal stages. 15/93 patients have isolated axial complain without peripheral disease. Enthesopathies are seen in 70%.Peripheral inflammatory joint complain is observed in 78 patients (84%), it is a bilateral and symmetrical chronic polyarticular pattern affecting (70/78) the small joints of the hands, forefeet and wrists. Ankle bi-arthritis is almost systematic and is observed in 71/78 patients; 8 patients with RSPA had no polyarthritis but oligo (6) or monoarthritis (2). Peripheral inflammatory joint is more frequent in NRSPA than in RSPA (98% vs 70%). Ultrasound individualises grade II synovitis (78/78), rarely with a Doppler effect (5/78). On average, more painful and swollen joints are observed in NRSPA than in RSPA. Extra articular and immunological aspects and activity scores are in table 1.Good sensitivity of peripheral arthritis to NSAIDs and MTX is noted in 94 and 91%.Conclusion:NRSpA are not uncommon in the Afro-Caribbean population, but are distinct from Caucasian SpA by several points: female predominance, rarity of B27 and syndesmophytes, frequency of polyalgic pattern, frequency of peripheral arthritis, rarity of extra-articular manifestations, more frequent but less marked inflammation, good response of arthritis to NSAIDs and MTX. Appropriate classification criteria for Afro-descendant populations is an urgent unmet need.References:[1](López-Medina C, et al. RMD Open 2019;5:e001108).Table 1.Extra articular manifestations, activity scores and immunological aspects of the patients.ItemResults (%)NRSPA n=46Results (%)RSPA n=47Dactylitis11 (23 %)13 (27 %)Uvéïtis5 (11 %) (p 0.02)15 (32%)Psoriasis1 (2 %)1 (2 %)IBD4 (9 %) (p 0.02)10 (21 %)Balanitis00Non gonococcal urethritis00Non gonococcal cervicitis00High CRP (at least 2 measure)21 (45%) (p 0.03)30 (63%)Mean CRP mg/l6 ± 4 17 ± 7BASDAI4.1 ± 0.24 ± 0.2EVA pain4.5 ± 0.44,5 ± 0.2HAQ0.6 ± 0.30,5 ± 0.2EVA Global4.9 ± 0.84,8 + 0.8EVA Spine5 ± 0.54,1 + 0.9FIRST score >55 /46 patients (10.9%)6 / 47 patients (12.5%)HLA B27 presence4/46 (8.7%) (p 0.01)14/47 (29.8%)Sexemale 10 (21.3%) (p 0.001)male 19 (51.3%)ACPA00Latex Waaler-Rose1 (low titer, > 65 years)1 (low titer, > 65 years)ANA2 (low titer, < 1/320°)3 (low titer, < 1/320°)Disclosure of Interests:None declared
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