welt; wale; weal
A raised, red mark on the skin, often long and narrow like an earthworm, caused by a blow, insect bite, or allergic reaction.
The mosquito bite turned into a welt.
He got welts on his back from being whipped.
腫れ is a general swelling, while みみずばれ specifically refers to a long, narrow raised mark like a welt.
青あざ is a bruise (discoloration under the skin), whereas みみずばれ is a raised welt on the surface.
Kana spelling is standard; usually written in kana.
Mixed kanji-hiragana spelling; less common than pure kana.
Mixed kanji-katakana spelling; ミミズ is often written in katakana for the earthworm, but the whole word is usually written in kana.
Full kanji spelling using rare characters; rarely used in practice.
Rare kanji form with 脹れ instead of 腫れ; it is rarely used.
Compound of みみず (earthworm) and 腫れ (swelling), from the resemblance of the raised mark to an earthworm.