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对爱美的女性来说，原本白皙的手脚背后，竟逐渐爬上青色的蜘蛛丝，严重者会凸起、宛如一条条蚯蚓。老一辈认为，这是劳碌命的象征，但其实大多是胶原蛋白流失或是血液循环不好造成的。

未老“手”先衰 胶原蛋白流失

常在年纪大的长辈手背或脚背上看到一条条青筋浮现，这是一种老化的过程，没有办法改善。这是因为皮肤真皮层胶原蛋白流失，皮肤失去支撑，干瘪塌陷，使得血管浮现特别明显所致。

但年轻人为什么也会手脚布满青筋？多半是静脉曲张造成的。静脉曲张依照程度分为３个等级：细小分布的青筋，就是最轻微的末梢血管病变，中等状态是只要站着，青筋就凸出来，宛如葡萄一球一球，或者像是蚯蚓爬满整个手脚背；最严重的状况则是静脉溃疡。

肥胖或提重物也会招来“蚯蚓”

静脉曲张最常见的情况是因为久站及长期穿高跟鞋，导致腿部压力增压，对抗地心引力的静脉回流到心脏显得非常困难。一开始皮肤表面会有发丝状的分布，位置通常在手、脚背内侧、大腿，此情形大多是个人体质、遗传所引起的，无伤大雅。

体型过胖或者长期提重物者，皮肤的青筋也会比较明显。肥胖或长期负重的人，下肢承受力较大，人在用力的时候负压增加，久而久之就会下半身血液循环不良，也就造成静脉曲张。

久站者多走动助肌肉收缩

若觉得下肢肿胀、沉重，或者血管外观突起，就应该就医；平时工作需要久站的人，应该穿着弹性袜，并且多走动，帮助肌肉收缩及静脉淋巴循环，尽可能做些腿部健康操，比如垫脚尖、垫脚跟，或让身体微微上下晃动，也能有效预防静脉曲张。