Study on the image characteristics of women with primary dysmenorrhea based on infrared thermography
Objective To use infrared thermography to analyze the distribution characteristics and patterns of body sur-face temperature in women with primary dysmenorrhea(PD).Methods Healthy female volunteers from Southern Medi-cal University were recruited between October and December 2021 and were divided into a PD group(n=100)and a nor-mal group(n=100)according to whether they had PD or not.Volunteers graded the degree of dysmenorrhea by visual an-alog scoring(VAS),while thermograms were taken using an infrared thermography system,and the temperature of the corresponding area was measured for analysis.Results Compared with the normal group,the PD group had lower tem-peratures in the palms,anterior regions of the lower limbs,umbilicus,lower abdomen,and medial part of the knee and thighs(P＜0.05),while the differences in the spine and perineum were not statistically significant;the PD group image mostly showed an asymmetrical distribution of the color of the right and left limbs,with the temperature of the anterior re-gion of the left lower limb[(30.56±0.63)℃]being higher than that of the right side[(29.84±0.92)℃],and the left knee and thigh medial part temperature[(30.64±0.83)℃]was lower than that on the right side[(31.35±0.48)℃](P＜0.05);in the PD group,palm and lower abdomen temperatures were lower in the severe dysmenorrhea group than in the mild and moderate groups(P＜0.05),whereas there was no difference between the mild and moderate groups.Palm and lower abdomen temperatures were negatively correlated with the degree of dysmenorrhea(r,=-0.509,P=0.001;rs=-0.275,P=0.006).Conclusions Women with dysmenorrhea have multiple body surface temperatures that are lower than normal and an imbalance of temperature between left and right limb or regions.The palms and lower abdomen are infor-mative for dysmenorrhea assessment and efficacy predic-tion.
primary dysmenorrheainfrared thermogra-phydegree of dysmenorrheatemperature differences
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