hallucination [hallucinations](sensory perception of something that does not exist) noun [UK: hə.ˌluː.sɪ.ˈneɪʃ.n̩] [US: hə.ˌluː.sə.ˈneɪʃ.n̩]John started having hallucinations. = John iniziò ad avere delle allucinazioni.
allucinazionenoun {f}
vision [visions](something imaginary one thinks one sees) noun [UK: ˈvɪʒ.n̩] [US: ˈvɪʒ.n̩]