About 71,600 in S'pore have psychotic disorders, says study Psychotic disorders may involve one or more of the following: - Delusions, which are the fixed belief in something that is not true. - Hallucinations, which are sensations that are not real, such as seeing things that are not there. - Disorganised thoughts, making a person's speech difficult to follow with no logical connection. - Abnormal motor behaviour, which includes inappropriate or bizarre postures, or a complete lack of response to instructions. https://www.straitstimes.com/singapore/health/over-71600-in-singapore-have-psychotic-disorders-says-study