Hallucinations are seen in all except:
Hallucinations are false perception in absence of any stimulus/object. Hallucinations are not a feature of anxiety. In schizophrenia, the most common type of hallucinations are auditory hallucinations followed by visual hallucinations. Seizures can experience all types of hallucinations. LSD intoxication can experience all kinds of hallucinations.
Schizophrenia
Seizures due to intracerebral space occupying lesions
Lysergic acid diethyl amide intoxication (LSD intoxication)
Anxiety
Basics of Psychiatry