How to say "inflammation" in Japanese

• 炎症えんしょうCommon
  nounThe common word for inflammation as a medical condition; it also covers irritation, and is the word you will normally want when saying that a part of the body is inflamed.
  歯茎はぐきが炎症えんしょうを起おこしているようなのですが。↗

  I think I have a gum infection.
• 焮衝きんしょう
  noun, suru verbA less common word covering the same ground as 炎症 — inflammation and irritation — but one you will seldom need; in ordinary contexts 炎症 is the word to reach for.
• ただれ
  nounUsually written in kana, this refers to a sore or ulcerated place rather than inflammation as a medical condition; its 'inflammation' sense is really this sore state, so use 炎症 for inflammation in general.

For inflammation as a medical condition use 炎症; 「ただれ」 points to a sore or ulcerated place rather than inflammation in general; 焮衝 has the same senses as 炎症 but is less common.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 炎症えんしょうinflammation
• 焮衝きんしょうinflammation
• ただれsore