Excessive unwanted hair may not have a specific cause, however excessive unwanted hair growth in woman is called hirsutism. The hair is usually thick and dark, rather than fine and fair. This growth of hair usually appears on the face and chest and could also be a side effect of PCOS.
Hirsutism occurs when females produce an excess of male sex hormones called androgens, or are more sensitive to these hormones. All women produce androgens; it’s fluctuating levels which can cause problems.
Although all females produce androgens, these usually remain at low levels. When there is a hormonal imbalance of them, excess hair can occur. This fluctuation of hormone levels and symptoms such as excess hair can be triggered by a medical condition called PCOS (polycystic ovary syndrome). Certain medical conditions and the menopause can also trigger hirsutism.