If your cat is checked by a vet and there is nothing to worry about, then it is behavioral problem. Once you know the problem is behavioral, then you can find the reason behind the problem. There are lots of important reasons why cats urinate outside of the litter box. try to tell you the possible reasons about why cats urinate outside of the litter box, and how to stop cats from peeing on carpet, furniture, and bed. This system I recommend to you has all the details about the reasons and the solutions.
Medical Definition of paranoia. 1  1: a psychosis characterized by systematized delusions of persecution or grandeur usually without hallucinations. 2  2: a tendency on the part of an individual or group toward excessive or irrational suspiciousness and distrustfulness of others.
The term was used to describe a mental illness in which a delusional belief is the sole or most prominent feature. In this definition, the belief does not have to be persecutory to be classified as paranoid, so any number of delusional beliefs can be classified as paranoia. For example, a person who has the sole delusional belief that he is an important religious figure would be classified by Kraepelin as having 'pure paranoia'.