Hair loss is clinically designated as alopecia. In common medical terminology, depending on its characteristics, causes, and patterns, it may also be referred to by other specific names. The most commonly used terms to describe hair loss include: Alopecia: This is the general scientific and medical term for hair loss. Androgenetic Alopecia: This is the most common form of hair loss, commonly referred to as baldness. In men, it manifests as receding hairlines and thinning at the top of the head; in women, as a loss of density at the top of the scalp. Telogen Effluvium: Characterized by a pronounced and diffuse hair loss that occurs when the hair growth cycle is altered. It is usually triggered by factors such as intense stress, nutritional deficiencies, hormonal changes, or after periods of illness. Alopecia Areata: This is an autoimmune disease that results in hair loss in localized areas, forming rounded or bald patches. Traction Alopecia: Hair loss caused by hairstyles that excessively pull on the hair root (such as very tight ponytails or braids). Hair Breakage: Although not hair loss from the root, it is often confused with it and occurs when the hair shaft breaks due to fragility, chemical treatments, or excessive heat.