Paranoia in older adults can manifest as symptoms like believing people are following you, stealing from you, or sneaking into your house at night. It falls into a category of mental health conditions ...

Could complex beliefs like paranoia have roots in something as basic as vision? A new Yale study finds evidence that they might. When completing a visual perception task, in which participants had to ...

Paranoia is a common word that's commonly misunderstood. "S/he's so paranoid!" can be heard in everyday conversation with the same incomprehension as saying someone is "OCD" because they're organized.