Translation guide
Describes patchy hair loss, typically on the scalp. In Japanese, the most common and natural term is 円形脱毛症 (alopecia areata), but more general expressions for bald spots or thinning patches also exist.
To refer to the autoimmune condition causing round, patchy hair loss.
The standard medical term for alopecia areata, the most common cause of spot baldness. Used in both clinical and everyday contexts.
彼は円形脱毛症で、頭に丸いハゲができた。
He developed a round bald spot on his head due to alopecia areata.
To describe a localized area of hair loss without specifying the cause.
A common, slightly blunt word for baldness or a bald spot. Can be used casually but may sound rude if referring to someone directly.
Can be considered impolite when talking about another person's appearance. Use with care.
頭のてっぺんに小さなハゲができた。
I got a small bald spot on the top of my head.
A more clinical term for a bald patch. Often used in medical contexts.
頭皮に複数の脱毛斑が見られる。
Multiple bald patches are observed on the scalp.
Verb meaning 'to become bald' or 'to have a receding hairline', often implying a larger area. Not specific to spots.
To describe spot baldness in pets or animals.
General term for hair loss, commonly used for animals. Can be combined with 斑 (patch) for clarity.
犬の背中に脱毛がある。
The dog has hair loss on its back.
The literal translation 'スポット禿げ' is not used in Japanese. Use 円形脱毛症 for the medical condition or ハゲ for a casual bald spot.
彼は若いのに額が禿げ上がっている。
He is young but his forehead is balding.