A personality type in which energy and attention are largely directed toward the outside world.
Mood state is silly and childlike; seen in schizophrenia.
Schneider's list of the most characteristic symptoms of schizophrenia, although we now know that all of them occur to some extent in other disorders.
Recurrence of a memory, feeling, or perceptual experience from the past.
Reduced range of emotional fluctuation.
In elevated mood states, thoughts are speeded up and jump from topic to topic with no sense, perhaps linked only by a similar word sound.
Technique of behaviour therapy in which, for example, a fear of water would be treated by jumping into a swimming pool.
Delusions held by a strong-willed person, such as a father, can come to be held by a weaker person living with him, typically a child; so-called induced psychosis.
Shorthand for disorder of the form of thought, including derailment or loosening of associations, Knight's move thinking, and word salad.
Tactile hallucination that ants are crawling on one; seen most characteristically in delirium tremens.
Psychoanalytic technique in which the patient says whatever comes to mind.
Delusion secondary to schizophrenia or organic brain disease that someone threatening is somehow present in a familiar person; cf. Capgras syndrome.
Pathology here can impair judgement, change personality, and cause disinhibition, among other features.
Sexual deviation involving desire to touch a non-consenting person, as on a crowded train.
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