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常見性脫髮 DIFFUSE HAIR LOSS

 

一般來說,頭髮的生長週期是固定的,頭髮在完成發育階段(生長期)後進入退化期階段而脫落,進而毛囊會進入休止期。

所以每天脫落多達100根頭髮是正常的。

在這裡指的是可能會因為一些其他的原因導致更多的頭髮脫落:常見性脫髮。

 

常見性脫髮的一些原因可能是懷孕、攝取某些藥物、營養不良......等。

 

懷孕期間和出生後脫髮

 一個孩子出生後二至三個月,通常這個階段的新手媽媽會失去更多的頭髮(產後落髮)。

這是因為懷孕期間血液中的雌激素水平很高,寶寶出生後雌激素水平驟降引起的異常落髮。

因此,更多的頭髮突然從生長期轉移到休止期,兩三個月後,這些頭髮脫落。

一旦激素平衡(荷爾蒙取得平衡)恢復正常,落髮情況就會停止。

通常懷孕相關的常見性脫髮發生在寶寶出生後六個月。

 

圓禿(班禿、鬼剃頭)

當頭皮有一個塊狀區塊的異常落髮情況,我們稱之為圓禿,通常是2-2.5公分的圓形或是橢圓形區域。

圓禿的發生沒有年齡或性別限制,任何情況下都可能發生,但是圓禿的發生原因尚不清楚;

可能是自體免疫系統因為不明的原因攻擊毛能所造成掉髮,醫生建議加強免疫系統、減輕壓力等因素。

通常圓禿可以自己恢復,可能是在幾個月後;一旦免疫恢復,毛髮就會再次生長。

 

因為化妝品不正確使用而導致脫髮

許多化妝品中含有化學合成物質,可能引起頭皮上的刺激或過敏反應。

這些產品的不正確使用也可能擾亂頭皮的平衡。而造成異常落髮的結果。

這些化學合成的產品經常是不適當的洗髮精、染髮劑或造型品......等產品。

 

因為攝入藥物而導致脫髮

一些藥物,例如凝血製劑、抗抑鬱藥、抗高血壓藥,避孕藥或高劑量的維生素A 等,特別是長期攝入可能會損害髮根,並引起藥物性脫髮。

 

因為營養失衡而導致脫髮(減重落髮)

鐵、鋅、硫和B群......等維生素可確保頭髮保持健康。 那些挑食、飲食失衡甚至因減重而節食的人常常患有減重性脫髮,而這一切都是因為飲食不正常,營養失衡而導致的異常落髮。

 

DIFFUSE HAIR LOSS

 English

The different causes of diffuse hair loss
 
 Normally hairs that have completed their development phase fall out after the resting phase. It is considered normal to lose up to 100 hairs per day. There can be a number of reasons why more hairs are lost. Some of the causes of diffuse hair loss can be pregnancy, intake of certain medicines, and poor nutrition, for example.

Hair loss during pregnancy and after the birth
Women frequently lose more hair two to three months after the birth of a child (postpartum effluvium). This is because the oestrogen levels in the blood are very high during pregnancy. They drop sharply after the birth. More hairs therefore suddenly move from the growth stage to the resting stage - and two to three months later they fall out. As soon as the hormone levels normalise again, the hair loss ceases again by itself. Normally pregnancy-related diffuse hair loss lasts for six months after the birth.

Circular hair loss (alopecia areata)
In the case of circular hair loss (alopecia areata), people lose - usually only temporarily - hair in a defined, usually circular to oval area with a diameter of 2 to 2.5 centimetres. Alopecia areata can occur regardless of age or gender. The cause of alopecia areata is not known. Physicians recommend boosting the immune system and reducing stress factors. Healing is frequently spontaneous after a few months: as soon as immunity has recovered, the hairs grow again. 

Hair loss due to incorrect use of cosmetics products
Many cosmetics products contain synthetic substances that can trigger irritation or allergic reactions on the scalp. The incorrect use of such products can also disturb the balance of the scalp. The consequence: hair loss. These products are frequently shampoos, hair dyes or styling products that are not suitable for the user’s hair type.

Hair loss due to the intake of medicines
Some medicines - for instance blood coagulation preparations, antidepressants, antihypertensive medicine, birth control pills or high doses of vitamin A - can damage the hair roots particularly with long-term intake, and cause diffuse hair loss.

Hair loss due to imbalanced and unsatisfactory nutrition
Iron, zinc, sulphur and also B vitamins ensure that the hair remains healthy. Those who have an imbalanced or even deficient diet therefore frequently suffer from diffuse hair loss.