Cimmino M A, Caporali R, Montecucco C M, Rovida S, Baratelli E, Broggini M
Department of Rheumatology, Genoa University, Italy.
Ann Rheum Dis. 1990 Jul;49(7):521-3. doi: 10.1136/ard.49.7.521.
The seasonal distribution in the onset of polymyalgia rheumatica (PMR) was determined in 58 patients with the disease and compared with that in 44 patients affected by rheumatoid arthritis of elderly onset (EORA). Thirty six (62%) cases of PMR developed during May to August; by contrast, only 14 (31%) cases of EORA developed in the same months, this latter disease failing to show any seasonal clustering. The monthly distribution of PMR correlated with outside temperature and hours of sunshine. These data suggest that PMR might be triggered by such factors as actinic damage of superficial vessels or infective agents with a seasonal cycle. Finally, the summer clustering of PMR may be helpful in the differential diagnosis from EORA.
对58例风湿性多肌痛(PMR)患者的发病季节分布情况进行了测定,并与44例老年起病的类风湿关节炎(EORA)患者的发病季节分布情况进行了比较。58例PMR患者中有36例(62%)在5月至8月发病;相比之下,EORA患者中只有14例(31%)在同一月份发病,后一种疾病未显示出任何季节性聚集现象。PMR的月度分布与室外温度和日照时长相关。这些数据表明,PMR可能由浅表血管的光化损伤或具有季节性周期的感染因子等因素引发。最后,PMR的夏季聚集现象可能有助于与EORA进行鉴别诊断。