"alopecia"の定義と意味

What is "alopecia"?

Alopecia is a condition characterized by hair loss, typically from the scalp but can also affect other parts of the body. It can occur suddenly or develop gradually and may result in partial or complete baldness. There are different types of alopecia, including alopecia areata, where the immune system attacks hair follicles, telogen effluvium, which is caused by stress or hormonal changes, and androgenetic alopecia, which is a hereditary hair loss. Alopecia can have various causes, including genetics, autoimmune disorders, hormonal imbalances, and certain medical conditions or treatments. Treatment options for alopecia depend on the underlying cause and may include medications, hair products applied directly to the scalp, injections, or hair transplantation. While alopecia is not life-threatening, it can have a significant impact on self-esteem and quality of life for those affected, so support and counseling may also be beneficial.