• Basic forms
• 痛む — ache; hurt / base form
• 痛みます — aches; hurts / masu form
• 痛んだ — ached; hurt / ta form
• 痛んで — aching … / te form
• 痛まない — do not ache / negative
• 痛めば — if (it) aches / conditional
• Common expressions
• 頭が痛む — one’s head aches
• 胸が痛む — feel emotional pain
• 心が痛む — one’s heart aches
• More
• 痛んでいる — is aching; is damaged / state

痛む（いたむ） is a godan intransitive verb. It describes pain or damage that occurs naturally, both physical and emotional.

• Basic forms
• 痛める — hurt; damage / base form
• 痛めます — hurts; damages / masu form
• 痛めた — hurt; damaged / ta form
• 痛めて — hurting … / te form
• 痛めない — do not hurt / negative
• 痛めれば — if (one) hurts / conditional
• Common expressions
• 足を痛める — hurt one’s leg
• 体を痛める — injure one’s body
• 心を痛める — hurt someone emotionally
• More
• 痛めたい — want to hurt / 〜たい form
• 痛めている — is hurting; has injured / state

痛める（いためる） is an ichidan transitive verb. It means to cause pain or damage to someone or something, physically or emotionally.