推荐回答(5个)
1、精神或身体的因素 精神压力过度是导致脱发常见病因。精神紧张、忧郁、恐惧或严重失眠等均能致使神经功能紊乱,毛细血管持续处于收缩状态,毛囊得不到充足的血液供应,而头皮位于人体的最上端,因而头发最易脱落。如果压力持续,再加上心理素质较弱,就易发生断发(毛)癖、食发(毛)癖、拔毛癖等。头部外伤,脊髓、延髓、中脑和脑干的病变,均可以引起头发脱落。精神因素还会严重地影响头发的生长周期,长时间的视力疲劳、精神压力过重、神经过度紧张、急躁或忧虑情绪、熬夜等,均可导致头发生长周期缩短,出现脱发现象,导致早秃。常见如产后脱发、重病后脱发、考试后脱发以及一些担负重大责任的单位担任人或商人的脱发。
2、内分泌失衡及遗传因素
脑下垂体分泌的生长激素可促进头发的生长,而生长激素的缺乏则会使头发的生长速度相对变慢;性激素还会影响毛发的健美:女性激素使头发柔软而富有光泽;男性激素则会使头发变得坚硬而粗壮,一旦体内性激素失去平衡,就可能出现毛发异常。因此,产后、更年期、口服避孕药等情况,在一定时期内会造成雌激素不足而脱发;垂体功能减退、肾上腺肿瘤、肢端肥大症晚期等,均可导致头发的脱落。大部分女性在接内分泌因素如甲状腺机能亢进;甲状腺过度活跃和不够活跃都可能导致头发变稀变薄,甲状腺补充剂可令头发回复正常。
甲状腺素分泌量也与头发的优劣有关:甲状腺功能亢进时,头发较细软,功能减退时则头发干燥且无光泽。近更年期时都会脱发,证实脱发的确可因荷尔蒙而致,如果是这种情况可选择接受荷尔蒙治疗或由医生处方服食药物。
3、疾病及药物治疗的因素
贫血、营养不良、急性高热、感染性疾病或长期肝病,如果干扰了发根部毛母细胞的功能,则会影响头发的生长与色泽,甚至使毛母细胞正常分裂被抑制,而使毛发处于休止期,出现头发脱落。此外,患卵巢肿瘤时,可因分泌过多雄性激素,发生头皮屑增多、头发油腻,导致脂溢性皮炎与脱发。
4,药物与头发的关系
许多药物会损伤头发,妨碍美容。免疫抑制剂、化疗药物、砷剂等药物可致脱发,长期服用抗菌素和止痛片,易出现头发细短、脱落的现象。部分营养补剂中含有兴奋剂,长期使用易使头发受损。普通的药物例如抗抑郁药、高血压药都可导致脱发,医生可建议病人转用别种药物。
其它的药物治疗因素如接受化学治疗、服用减肥药、胃溃疡药、维他命A酸Z读于治疗癌病的化疗,很多人都知道会引致脱发,这是由于化疗会杀死癌细胞以外任何快速分裂的细胞,包括处于生长期的发根细胞,所以便会有约九成的头发脱落。当化疗停止后头发会逐渐重生生长。
5、食物及营养代谢的因素
由于偏食等因素而引起的营养不良,以及因消化不良、慢性消耗性疾病而致营养不均衡或吸收障碍,均可导致头发的正常生长被抑制而进入休止期,并出现头发稀疏、枯焦、早白或脱落。食糖或食盐过辆⒌鞍字嗜狈Α⑷碧缺芯⒐量的硒等,以及某些代谢性疾病如精氨基琥珀酸尿症、高胱氨酸尿症、遗传性乳清酸尿症、甲硫氨酸代谢紊乱等,也是头发脱落的原因。
掉头发如果严重的话有很多原因,先是遗传性因素,其次是病理性,比如经常服用某种药物,还有平时作息时间不规律,还有经常性烫发染发等等。假若天天吸烟,那么这些人的脱发的现象会大增加。吸烟可能会损伤毛囊,影响头皮中血液和激素的循环或者引起雌性激素增加。
蟅个状态,我也有过的,都是离不开一些习惯吧!前半年的时候然后,因为工作压力太大了的,而且还经常熬夜,不知不劂头发掉了很多呵,有些部位还很明显,我才二十几岁,鹧样子怎么找女友这个,当初我也是怕啊!后莱同事知道我的情况让我学习(董玔俊日记)一文所简述的做,经过几个月后,我才有了光泽美丽的头发那,不在担辛什么了的!呃
对头部进行按摩,可以学一些简单的头发按摩,在每天晚上睡觉栀前轻松的按摩头部十分钟然后,不仅能够缓解一天的疲铹,对睡眠有很好的促进作用,而且还有助于减少掉发。还有要保证均衡的饮食呀,头发生长需要营养,如果营养不足,头发就会出现问题可以说,甚至脱落,所以载日常生活中,我们饮食结构要多样化是这样的,克服和改正偏食的鈈良习惯。除此之外,不宜多食油腻辛辣刺激性的食物,如辣椒、肥肉和油炸类食品等。呀
油脂过旺导致毛囊堵塞!从而脱发!睡眠不好!抽烟喝酒!导致脑下垂体受刺激!分泌油脂!建议用专业的控油洗发水!少上网
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