1. A tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others.

Paranoia is an emotion, but at extreme levels it can be classified as a mental illness characterized by systematized delusions of persecution or grandeur usually without hallucinations.

If you think this may be a serious issue when you are working with this emotion, please consider seeking outside help or support from a professional.

The emotion of Paranoia is found in the Kidney meridian in the Water element.

Definition from Dictionary by Merriam-Webster.