Petrified is an extreme adjective patients may use to say they are extremely scared of something.

Another example:

Is my son going to be OK? I was so petrified when the police said he’d been involved in an accident.

We can use petrified in the following combinations:

petrified + of – to express we are extremely scared of something in particular e.g. needles, spiders etc.

petrified + when – to express the time when we felt extremely scared.

petrified + about – to express a situation we are extremely scared about

Have you ever been petrified?