The reasons for female hair loss are very complicated. Common types include female androgenic alopecia, resting alopecia, such as postpartum alopecia, and other causes include anemia, thyroid dysfunction, autoimmune diseases and so on. These will all lead to female hair loss. It is necessary to comprehensively consider various factors to find out the specific reasons for female hair loss, so as to carry out targeted treatment. When female patients with alopecia seek medical treatment, the doctor will ask about the patient's medical history, menstruation, living conditions, mental state, eating habits, family history and so on. Check the hair distribution of the whole body and the posture of the patient to find out the reason.
Under normal circumstances, we naturally lose a certain amount of hair every day, and the symptoms of hair loss, especially the early symptoms of hair loss, are also hair loss, so it is difficult to judge whether it is hair loss in the early stage of hair loss, not only it is difficult to find hair loss, but also it is difficult to get timely and effective treatment.
Why do you lose your hair under normal circumstances?
Hair growth, like plants in nature, will have a life cycle change of "coming and going with the seasons", so healthy hair will also have a shedding period.
Hair grows from hair follicles on the scalp. Hair follicles don't grow all the time, but they need rest. Therefore, after a growth cycle of about 2 to 6 years, they will enter a shedding period of about 4 weeks, and after the shedding period, they will be in a dormant period of 4 to 6 years. In the shedding period, the hair gradually shrinks and falls off, and the hair follicle will sleep and no longer grow hair.
There are about 5 million hair follicles in the human body (including hair, beard and eyebrows, as well as invisible hair on the whole body skin).
The head is 654.38+0000000 (not only the whole head is hairy, but also other parts of the face, most of which are invisible).
There are only 65438+100000-1.50000 hair follicles on the scalp (this part of hair follicles is hair follicles). A healthy hair follicle unit consists of 2-4 hair follicles, and each hair follicle will grow a hair, so each person has about100000 to150000 hairs on average.
The life cycle of each hair follicle is different. Every day, the hair follicle enters the quiescent stage, and the hair also enters the growing stage. But overall, about 84% of the hair is in the growth stage, 65,438+04% of the hair is in the static stage, and 2% of the hair is in the shedding stage. 65438+ 2% of the million is already a lot. It is normal to lose a certain amount of hair every day, so don't worry.
What is hair loss?
Although the initial symptom of alopecia is alopecia, there are essential differences between alopecia and natural alopecia.
Hair loss refers to the interference of hair follicles by hormones or the outside world. When you lose your vitality, you will lose your hair and stop growing. The hair that originally grew out is loose and falls off because of the atrophy of hair follicles, so it will lose hair. However, because the number of hair follicle atrophy during hair loss is far more than that at rest, the number of hair loss is far more than that of normal hair loss.
Hair loss is a kind of pathological hair loss, which refers to a large number of hair falling off in an abnormal state. After hair loss, it is difficult for hair to grow on its own, or even if it does, it is soft hair, which is different from normal coarse hair. Moreover, these soft hairs will soon fall off and eventually no hair will grow, and the hair follicle will completely enter a passive dormancy state.
What is the difference between hair loss and hair loss?
Hair loss refers to the normal metabolism of hair, which is caused by the life cycle of hair follicles. This is a normal physiological phenomenon. After falling, the hair follicle will grow again after entering the growth period, so don't worry at all.
Hair loss is the phenomenon that the hair follicle stops growing after being influenced by the outside world (such as trauma, such as DHT) and the original hair begins to fall off, which is the manifestation of hair follicle pathology.
Once hair loss occurs, it is difficult to stop it by itself unless it is solved by manual intervention. In other words, hair loss will lead to thinning or baldness of the scalp, while normal hair loss will not.
How to judge hair loss or hair loss?
1. Is the total hair reduced?
Because the total amount of hair will be less and less after hair loss, it is obvious that the hair is much less than before, and the total amount of hair will remain the same when hair loss occurs, so you can judge whether you have hair loss by taking pictures regularly.
Hair loss can cause obvious thinning or even baldness in the hair area (thinning and baldness).
If the top of the head is obviously sparse or even bald, and the hairline on the forehead is retreating or sparse, it is an obvious hair loss symptom. This is suitable for cases with alopecia symptoms, and it is difficult to judge the early stage of alopecia before the symptoms of alopecia appear.
Step 2 check the number of hair loss
As mentioned earlier, under the normal condition of hair loss, about 2% of hair will fall off every day, of which about 80- 100 hairs will fall off. This amount is difficult to detect if you don't observe it deliberately, and you will only find it when you wash your hair or comb your hair.
But the number of hair loss far exceeds this level. Generally, the number of hair loss per day far exceeds 100, or even 200 to 300 a day, and alopecia areata is more serious. We can judge it by counting the number of hair loss per day.