>>20939896>>20943829>>20943914>>20944364To elaborate, in case you guys aren't aware of the term "negative symptoms":
It means a lack of activities which normal people can do, such as feel pleasure or motivation, feel a full range of emotions and outwardly express them, be able to produce speech spontaneously and not only when asked to do so, and so on. Schizophrenia is identified by constant negative symptoms, with intermittent episodes of positive symptoms (psychosis). Positive symptoms can also present in mania and depression, which can cause a misdiagnosis of schizophrenia by misinformed clinicians. Depression itself also presents with negative symptoms, making it difficult to distinguish from the nonpsychotic phases of schizophrenia.
Schizoid disorder is schizophrenia without the development of positive symptoms. Schizotypal disorder is schizoid plus very mild positive symptoms, not full blown psychosis. All three types of schizophrenia are the same disorder expressed differently.
