noun
red birthmark; hemangioma
Medical and everyday term for a reddish birthmark, especially a hemangioma (血管腫).
See also: 血管腫
赤ちゃんの腕に小さな赤あざがある。
The baby has a small red birthmark on its arm.
赤あざは血管腫の一種です。
A red birthmark is a type of hemangioma.
Compound of 赤 (red) and あざ (birthmark/bruise). The kanji 痣 is used for あざ, but the mixed kana spelling is more common.