Because you probably don’t live in isolation, you’re likely familiar with the phrasal verb “to run amok”. Our friends Messrs. Merriam and Webster have four related definitions for amok. The second, the one we know best, “in a wild or uncontrolled manner”, is of Malay origin and dates to the early 1670s.
However, the earlier (1665) definition, “a murderous frenzy that has traditionally been regarded as occurring especially in Malaysian culture”, is apparently a thing that still exists that is bound almost entirely to Malaysian culture, but has also shown up in cases in the Philippines and Puerto Rico. It’s a rare madness — and is therefore classified as a mental illness — where someone will just completely lose his (or her) mind and causes serious bodily harm or straight up murders someone for no reason.
I can’t be the only person to notice that all three of these places are islands, right?
You can read more on Amok here.