Yes, it is possible for a person to hallucinate another person who isn't really there while being among people who are actually present. This phenomenon is known as an "extracampine hallucination" or "third-person hallucination."
Extracampine hallucinations can occur in various psychiatric conditions, with schizophrenia being one of the most well-known disorders associated with this type of hallucination. In such cases, a person may experience vivid and convincing hallucinations of people or entities that others cannot see. These hallucinations may interact with the individual, speak to them, or even give them instructions or commands.
People experiencing extracampine hallucinations might respond to these perceived entities as if they were real, potentially leading to unusual behavior or social withdrawal, as they may prefer to avoid interactions with others due to their unique experiences.
It's essential to understand that hallucinations are a symptom of an underlying condition, and they are not indicative of the person's character or intentions. People experiencing hallucinations need understanding, compassion, and professional support to manage their condition effectively.
If you or someone you know is experiencing hallucinations or any other mental health symptoms, it is crucial to seek help from a qualified mental health professional. They can provide a proper evaluation, diagnosis, and create an appropriate treatment plan to address the specific needs of the individual.