Dysmenorrhea is uterine pain around the time of menses. Pain may occur with menses or precede menses by 1 to 3 days. Pain tends to peak 24 hours after onset of menses and subside after 2 to 3 days. It is usually sharp but may be cramping, throbbing, or a dull, constant ache; it may radiate to the legs.
痛经是指在月经期出现的子宫部位的疼痛。痛经可以开始于月经期，也可以开始于经前1～3天。通常疼痛在月经开始24小时后达到高峰，２～３天后缓解。疼痛通常是尖锐的，但也可能是绞痛、阵痛，或是一种持续性钝痛，疼痛可以放射到大腿。
dysmenorrhea
/,dɪsmenə'rɪə/ 痛经 n.
uterine
/ˈjuːtəraɪn/ 子宫的 a.
menses
/ˈmensiːz/ 月经 n.
subside
/səbˈsaɪd/ 缓解 v.
cramp
/kræmp/ 绞痛 v.
throb
/θrɒb/ 阵痛 v.
radiate
/ˈreɪdieɪt/ 放射 v.
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