Hirsutism is defined as:

Hirsutism is defined as excessive body hair growth in areas typically associated with male-pattern hair distribution, such as the face, chest, and back in women. This condition is often related to hormonal imbalances, particularly elevated levels of androgens (male hormones) or a sensitivity to these hormones, leading to hair growth in areas where men usually experience hair.

The focus on male-pattern areas distinguishes hirsutism from other hair growth issues. It's not merely about having body hair; rather, it's about the quantity and distribution in areas that would not normally exhibit significant hair growth for females, aligning with male characteristics. Thus, the definition highlights the hormonal and anatomical considerations that are central to understanding hirsutism.