未来过月经

为什么有的女性从未来过月经

月经是女性性器官发育成熟的生理表现,那么女孩多大年龄月经还没来应该视为不正常呢?

这是许多家长都关心的问题。正常女孩初潮年龄在12—18岁间,平均年龄13一15岁。如果女性年满18岁或第二性徵发育成熟2年以上仍无月经来潮,我们称之为原发性闭经。但随著气候、环境、经济和生活条件的改善,我国女性性生理发育已明显提前,故有人认为,原发性闭经定义的年龄应修正为年满16岁。原发性闭经发病机率并不高,仅为闭经总数的5%。为什么会出现原发性闭经呢?原因是多方面的,如遗传因素、免疫因素、内分泌因素、精神神经因素等,分别叙述如下:

1. 先天性闭经: 主要原因为生殖器官发育畸形。

遗传因素引起的卵巢发育下全、(如性染色体异常造成的特纳氏综合症)、条索卵巢、两性畸形,临床上常见的如睾丸女性化畸形,外阴多表现为女性,但无来月经的物质基础;
子宫颈、子宫发育下全、始基子宫或子宫内膜缺如、子宫缺如;
生殖道闭锁。生殖道闭锁是个值得注意的问题,这类原因的闭经叫假性闭经,也叫隐经。事实上子宫内膜每月都有周期性的内分泌变化,可以引起子宫内膜周期性脱落形烕月经。只是由於先天性宫颈闭锁、阴道闭锁、阴道横隔、处女膜闭锁等使生殖道梗阻,每次月经来潮时,经血不能排出体外而储留於阴道内或子宫腔内。这些女性会出现周期性腹痛,下腹部常可触及包块。需要及时进行手术治疗。
2. 内分泌失调性闭经:包括

原发性卵巢功能异常如:卵巢内酶缺陷,患者除原发性闭经外还有第二性徵不发育、易疲乏、肌肉无力、肢体麻木、脱发、严重的高血压等;无反应性卵巢,卵巢对内源性和外源性促性腺激素缺乏有效反应,患者第二性徵及生殖器官发育下良;
垂体功能异常如:原发性垂体单一性促性腺激素缺乏症,主要症状为原发性闭经,性腺、性器官和性徵不发育,身高正常或高於常人;垂体生长激素缺乏症,表现为出生时发育正常,以後生长迟缓,体型及面貌似儿童,身材矮小,智力正常,无第二性徵发育及闭经;
下丘脑功能异常如:单一性促性腺激素释放激素缺乏,使性腺功能继发性减退,伴有嗅觉减退或丧失;此外还有一些功能性下丘脑性闭经如:精神性闭经。由於精神刺激使下丘脑—垂体—卵巢轴功能紊乱,导致闭经;精神性厌食症,常见於少女,严重的进食障碍下仅影响下丘脑—垂体—卵巢轴的功能,引起闭经,还可影响身体发育及营养状态,甚至可以致死;
甲状腺、肾上腺功能异常如:甲状腺功能低下、肾上腺皮质增多症及糖尿病等内分泌疾病均可引起闭经。
3. 感染性闭经:

卵巢感染,常见於幼年时患过腮腺炎,并发生卵巢炎,造成卵巢组织破坏、卵泡数减少、性激素合成与分泌障碍;
宫颈—宫腔黏连症,特异性感染破坏子宫及宫颈内膜如子宫内膜结核,使宫壁组织黏连,疤痕愈合使宫颈、宫腔黏连闭锁而造成闭经;
颅内感染,如患脑炎、脑膜炎後影响了中枢对卵巢的调控。
4. 创伤性闭经:
如卵巢、子宫内膜遭受放射线破坏或免疫性损伤;卵巢、子宫因肿瘤病变被手术切除;颅底创伤使垂体或下丘脑受累。

5. 肿瘤性闭经:
某些卵巢、肾上腺、垂体、下丘脑、颅咽管肿瘤都可导致下丘脑—垂体—卵巢轴功能紊乱,引起体内性激素的合成与分泌障碍,造成闭经。

6. 全身因素性闭经:
一些慢性消耗性疾病、营养不良、急遽消瘦、各种急性传染病、寄生虫病、服用某些药物、化疗期间等都会引起闭经。

由此可见,女孩不来月经是很多疾病的一个症状,对年满16岁仍下来月经或已13岁仍无二性徵发育者,均应重视,并及时进行检查寻找病因,以便及早治疗进行补救。

新闻通讯

订阅新闻通讯以获取所有最新更新

Yumtrade is an online shop that caters health & beauty products to consumers in Singapore as well as worldwide.

Tel: +65 6899 0100
Email: yumtrade@gmail.com

总公司

Address: No. 41 Toh Guan Road East,
#07-05 ADL Building Singapore 608605
Tel: +65 6562 5526     Fax: +65 6562 5592

送货服务
合作伙伴
A Member Of Singapore Agency
Singapore Business Registry

Singapore Business Registry

EAN International

EAN International

Singapore Association
logoForWeb

Singapore Chinese Druggists Association

Yumtrade Singapore online shopping store is an online shop that provides a wide range of Beauty & Health products catering to different customers’ needs. It is an online shop giving good discount schemes, the best delivery service, and good customer service to households and offices Islandwide in Singapore. Browse our online shop and choose products from a variety of items like Beauty, natural male supplementsvitamins & supplements, and herbal products. Yumtrade Singapore online shop welcomes you warmly to browse our online stores. Shoppers can browse through our online promotion items and enjoy discount shopping at our online store just like shopping in a supermarket. Experience a convenient online order system and online shopping cart. You can plan and order your products 24 hours a day! We build reliable online shopping, providing privacy and security to online shoppers. Shoppers who want to buy online can be assured of sound eCommerce practices, greater privacy protection, and peace of mind while performing online transactions. Yumtrade Online Shop is committed to delivering your favorite brands of products by our delivery expert to you by the next working day. Hope you will have an enjoyable shopping trip. Come and shop online with us. More info on online shopping.

Tongkat Ali is known to boost performance, stamina, and muscle mass in bodybuilding. In a clinical study conducted with a group of men, half the male was given Tongkat Ali to consume while the other half were not. During a few weeks of the physical training program, the men who consume the herbs experienced greater muscle mass gain, stamina, and strength. There were also a growing number of Asian athletes and bodybuilders whom are using Tongkat Ali as an androgen booster to improve muscle size and enhance their sports performance.

Testosterone is a male hormone that can be found in both men and women. But it is more of the male characteristics. Usually, at age 30, blood levels of testosterone start to decline slowly. If testosterone declines in a man’s body, his muscles, energy, and libido begin to decrease. Men who smoke and drink alcohol excessively lose testosterone faster than those who don’t. Male hormones or testosterone stimulates metabolism, promotes fat burning, increases red blood cells and muscle growth.

Copyright © 2021 YumTrade. All Rights Reserved.

Add to cart