word usage - Is it correct to say "I hurt"?

In this dictionary,

hurt (of part of your body) to feel painful; (of an action) to cause pain:My feet hurt. Ouch! That hurt! It hurts when I bend my knee.

Can we use "hurt" for things that is not a part of our body. Ex,

Is it correct to say "I hurt"?

Answer

Hurt means "causing oneself/experiencing pain" with no object. When used with personal pronouns as subjects it means "something indefinite/general causes X pain" or "X experiences pain in general."

My arm hurts = My arm causes me pain.

I hurt = Something indefinite causes me pain, I'm feeling pain in general.

If it has an object, it means "to injure X" and can be used with objects as well as people or body parts.

I hurt my arm = I injured my arm.

I hurt our relationship = I damaged our relationship

I hurt myself = I injured myself, I probably hurt too.

I hurt me is sometimes used to say you damaged yourself emotionally or spiritually. I hurt myself can mean this too, and if you mean you physically damaged yourself, is the preferred phrase.