Use when you notice something unusual and seek an explanation.

Inquiring Context

It can suggest a mild warning that something is not quite right.

Cautionary Nuance

It's a way to express curiosity without seeming too intrusive.

The phrase can convey concern or surprise toward someone's mood or appearance.

It may subtly express annoyance or frustration with the situation or person.

Can be used to address changes in a person's behavior towards you.

Implies a genuine concern for someone else's well-being or state of mind.

Use it to get more information about someone's unexpected actions.