Refers to skin that has been scraped or rubbed raw, often red and sore. Common in everyday speech for minor injuries like skinned knees.
I fell and scraped my knee.
赤むけに絆創膏を貼った。
I put a bandage on the graze.
Common mixed kanji-kana spelling; the kanji 赤 indicates redness.
Full kanji spelling; 剥け conveys peeling or scraping. Less common in everyday writing.
Kana-only spelling, often used in casual or child-directed contexts.
Compound of 赤 (aka, 'red') and むけ (muke, from 剥ける, 'to peel off'). The word literally describes skin that has been rubbed or scraped until it is red and raw.