痛む

1. Origins, structure, and basic meaning

• Structure: 痛む is read いたむ. It means for a part of the body to hurt or for someone to feel emotional pain.
• Basic usage: The two examples show physical pain; in an emotional context, it can also describe emotional pain.

2. Common pitfalls and similar expressions

• Present pain
  • 足が少し痛む describes the feet hurting a little now.
• Pain returning in the past
  • 傷がまた痛んだ describes an old injury aching again in the past.
• Emotional pain
  • In an emotional context, distinguish this sense from physical pain.