Now here’s a hook:

Every year, doctors at a hospital in the Yunnan Province of China brace themselves for an influx of people with an unusual complaint. The patients come with a strikingly odd symptom: visions of pint-sized, elf-like figures – marching under doors, crawling up walls and clinging to furniture.

The culprit is a mushroom, “Lanmaoa asiatica”, which causes hallucinations of tiny people if it’s not cooked thoroughly. And apparently, that mushroom can be found in multiple places around the world, with multiple appearances.