The hair is like a forest : the hair grows, live and dies. The dead hair fall and are normally replaced by young hair. It is considered that hair loss less than 50-100 hairs per day can be normal.
In some cases, hair loss exceeds 50 to 100 hairs a day and then we consider it as a hair loss disease.
» Hair loss takes many different forms, It can :
- Affect children, adults, men, and women.
- Relate to all or parts of the scalp.
- Reveal a normal scalp or scar.
- etc...
» Hair loss can be isolated or accompanied by many signs:
- Tiredness.
- Greasy hair.
- Brittle hair.
- Fine hair.
- Dandruff or crusts.
- Itching.
These signs are all important in determining the cause of hair loss and promoting factors or exacerbating hair loss.
Any hair loss thus requires a medical consultation to determine the cause, sometimes need a blood test, and to establish a treatment of hair loss.
Causes of hair loss :
A fall greater than 60-100 items per day or the appearance of a scarcity of hair (alopecia) may result from several mechanisms.
Hormonal, hereditary (genetic), affects more than half of men.
This is the main cause of baldness in men (75% of cases of hair loss). It is estimated that an increase of dihydrotestosterone (DHT) in the scalp which makes the hair thin and eventually fall off (the drug finasteride is precisely by blocking the synthesis of this hormone). Hormones including testosterone play an important role, because we know that castrated men do not lose their hair.
Poisoning
Stress (shown by scientific studies from 2005: Following a chain reaction that leads to blockage of the hair growth, which causes hair loss, because they are lost by renewed).
Poor diet (lack of minerals, vitamins or trace elements), in which case prefer natural treatments (wheat germ, ...) to fight against hair loss.
Allergy.
Dandruff.
Side effects of certain drugs (anticancer drugs during chemotherapy, anti-hypertensives, anti-cholesterol, etc.).
