"Tom, I've had some pretty strange hallucinations, and I'm going to have to relearn what is and isn't real."

"That would be a strange hallucination," I said.

No; but I have had a strange hallucination; it is over now.

We're all beghming to experience strange sensory hallucinations.

The drug was known to cause strange hallucinations.

He suffers a strange hallucination in which wounds, received at the hands of muggers, start bleeding copiously through his bandages.

He closed his eyes momentarily, as if he, too, were visited by strange hallucinations from the produce stalls.

It decided the humans were creations of its imagination, strange hallucinations sent to deliver a message that only it could hear.

Tom was frightened by his strange hallucination.