severe pain
terrible pain
chronic pain

From the sound of him, the man had to be in terrible pain.

At first he thought that I was having some terrible physical pain.

I've had a terrible pain in my arm for maybe six weeks, and right down.

For a moment there was terrible pain in her eyes.

She was in terrible pain for two days, but we still did it on the second day, because I'm really good.

I was still in terrible pain, but Mother called me immediately to her room.

She felt a terrible pain at the sight of these things.

The terrible pain in his head went on, and it was still impossible to think.

We've both known terrible pain and loss, but it didn't break us.

In high school, the terrible pain hit her - but no one believed there was anything wrong.