Yes, Diagnosis of Something in Schizophrenia Spectrum
If your character has any form of sensory perception that includes things that are not there according to the rest of the world, then the person is said to be hallucinating. According to psychiatrists, doctors and social workers I have talked to, there is only one mental illness in the DSM that entails ongoing hallucinations, and that is schizophrenia.going to fall somewhere in the
Poor personal hygiene is also characteristic of schizophrenia, but is not a critical diagnostic symptomschizophrenia spectrum.
If your character can prove to doctors that he is not hallucinating, that he is genuinely experiencing ESP or clairvoyance, then that would prevent him from being diagnosed as schizophrenicdelusional, but he would have to provide incontrovertible proof of psychic ability, which is something modern medicine wholeheartedly does not believe in.