They may feel irritable, more aggressive than before, or even violent.

When it is low, she may feel more anxious and irritable.

He had scarcely gone, it seemed, before people began feeling irritable.

I would certainly have cause to feel irritable after last night.

Feeling irritable and out of control or depressed when not using it.

By then he was feeling still irritable at the inconvenience, but much better.

You may avoid seeing people, have problems sleeping, and feel tired or irritable.

As I mentioned, watch out if you start feeling irritable.

Find someone who feels irritable before drinking his/her coffee in the morning.

He knew now, yeah, why he'd been feeling so irritable.