A character can suffer '''wounds''' or '''injuries''' from creature attacks (and player attacks on Wild PvP servers) as well as falling, [[thorn]]s, drowning, and other mishaps. Wounds are shown under the affected body part in the player's [[inventory window]] under the expanded "body" tab. Pets and other creatures can also suffer wounds, but only from combat. Wounds on creatures can be examined by right-clicking the creature and selecting look > equipment from the options.
Medium, bad, and severe wounds will need treatment.