What does the term 'alopecia' refer to?

The term 'alopecia' specifically refers to hair loss. It encompasses various types of hair loss conditions, ranging from localized patches of hair loss to more widespread thinning. This condition can affect people at any age and can be caused by a variety of factors including genetics, underlying health issues, stress, and certain medical treatments. Understanding alopecia is crucial in the field of cosmetology, as it helps professionals recognize and cater to the needs of clients experiencing this condition. The other options describe hair characteristics, such as texture or condition, rather than referring to hair loss itself.