禿はげ上あがる

godan verb (-ru), intransitive verb

become bald from the forehead; recede (hairline)

Describes male-pattern baldness where the hairline recedes from the forehead upward. Often used with 頭 (head) or 額 (forehead).

• 父ちちは若わかい頃ころから額ひたいがはげ上あがってきた。

  My father's forehead started to become bald from a young age.

• 最さい近きん、髪かみの生はえ際ぎわがはげ上あがってきた気きがする。

  Lately, I feel like my hairline is receding.