1. The drug caused him to start hallucinating, seeing things that weren't really there.
2. She was convinced she was hallucinating when she saw a unicorn in her backyard.
3. The lack of sleep had him hallucinating, hearing voices that weren't real.
4. The fever had her hallucinating, seeing strange shapes and colors.
5. He was so dehydrated that he started hallucinating and couldn't tell what was real.
6. The stress of the situation had her hallucinating, thinking she saw her deceased loved ones.
7. The medication he was on had a side effect of hallucinating, causing him to see spiders crawling on the walls.
8. The sleep deprivation had her hallucinating, hearing music that wasn't playing.
9. The heatstroke had him hallucinating, believing he was in a different place entirely.
10. The intense fear had her hallucinating, imagining monsters lurking in the shadows.