I can provide information about the concept of paranoia.
Paranoia is a mental state characterized by excessive and irrational distrust or suspicion of others, often accompanied by the belief that others are plotting against or intending harm to the individual. It is generally considered to be a symptom of certain mental health conditions, such as paranoid personality disorder or schizophrenia. Paranoia can also arise as a result of substance abuse, severe stress, or certain medical conditions.
You are correct in stating that paranoia is caused by the individual's own thoughts and perceptions rather than the actions of others. It is an internal state of mind, where the person interprets events, situations, or the intentions of others in a highly suspicious and fearful manner, even when there is no real evidence to support such beliefs.
It is essential to understand that paranoia is a serious mental health concern, and if someone is experiencing persistent paranoid thoughts that interfere with their daily life, it's crucial for them to seek professional help from a mental health expert or a healthcare provider. Treatment options may include therapy, counseling, or medication, depending on the underlying cause and severity of the paranoia.