Which condition is characterized by hair loss?

Alopecia is specifically defined as a condition that leads to hair loss, affecting individuals in various ways. It can manifest as patchy hair loss, complete baldness, or thinning of hair, and can result from multiple factors including genetics, hormonal changes, autoimmune responses, and environmental influences. Understanding alopecia is crucial in the context of cosmetology, as it directly impacts the hair care and styling needs of clients.

In contrast, hyperhidrosis mainly refers to excessive sweating, not related to hair loss. Dermatitis encompasses inflammation of the skin, which may cause irritation or rashes but does not inherently lead to hair loss. Psoriasis is a chronic skin condition characterized by red, scaly patches, and while it can affect the scalp and potentially cause hair shedding, it is not primarily identified as a hair loss condition. This distinction is essential for cosmetologists working with clients who may be experiencing hair-related issues.