There are several causes that can cause hirsutism. All of these would lead to disruption of androgens and increased hair growth.
The origin of the hormonal disorder can be on a ovarian, adrenal or pituitary level. These three sources constitute the central hirsutism.
Peripheral hirsutism appears at puberty and no hormonal disturbances are found, unlike central hirsutism. In the peripheral hirsutism the disorder would be on the performance level of male hormones. A disproportionate response of follicles to the presence of normal amounts of hormones occurs. t does not occur with other disorders such as irregular menstrual cycles and fertility problems, as often happens in many cases of patients with central hirsutism.