Final answer:
Hirsutism is marked by abnormal and excessive hair growth on a woman's face and body, which could be symptomatic of underlying hormonal conditions like PCOS. It is differentiated from the normal secondary sexual characteristics that develop during puberty.
Step-by-step explanation:
Hirsutism is characterized by increased growth of facial and body hair in women, similar to patterns seen in males. This condition is often associated with an imbalance of sex hormones, such as androgens, which can cause excess hair growth. Women with hirsutism may see a noticeable increase in thick, dark hair on the face, chest, abdomen, and back. It is important to note that hirsutism and the growth of pubic hair and axillary hair (underarm hair) are a normal part of puberty and should not be confused with the abnormal hair growth seen in hirsutism.
Hirsutism may indicate an underlying condition like polycystic ovary syndrome (PCOS) or other hormonal imbalances. Gabrielle's case, as described, highlights common symptoms of PCOS, which include irregular menstrual periods, weight gain, acne, and hirsutism. The condition can lead to other effects such as male-pattern baldness and the potential disruption of menstrual cycles.