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Condition :


What is it ?

Dark or pale skin, red or blond pigmentation, puberty or adulthood: each person has a unique hair type that changes over the course of their life!

What are the causes?

Like cells, the functioning of the hair system is complex and unique to each person. It can be explained by three factors:


Abundant or sparse eyebrows, curly, voluminous or fine hair: our genetic heritage transmits our physical characteristics and the composition of our genes. The hair system is no exception, and as such, heredity explains the structure of our hair, including its colour and density. That’s why, for example, we perceive less abundant but above all lighter and more moderate hair growth in northern populations compared to Mediterranean populations.


Hormonal changes have a direct impact on hair, whether they are biological - such as pregnancy and puberty - or pathological - such as hyperandrogenism. Influenced by the level of hormones in the body, hairiness can therefore be normal or excessive. Too high a level of male hormones, a greater physiological sensitivity to them, or a decrease in female hormones (estrogens) as in the case of Stein-Leventhal syndrome – more commonly known as polycystic ovary syndrome (PCOS) – or Cushing's syndrome, can lead to a change in growth, pigmentation and hair density.


Some drugs tend to modify the hair system of individuals. Although everyone is more or less sensitive to them, use of glucocorticoid-based treatments - such as cortisone and hydrocortisone - but also cyclosporin, diazoxide, minoxidil, danazol or some anabolic steroids can lead to more significant hairiness.


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