Affect – the external expression of a patient’s mood (sadness, anger, joy, fear). May be inconsistent with patient’s mood, depending on the disorder.
Anorexia – loss of decrease of appetite.
Catatonia – various strong motor anomalies, for instance catatonic stupor (slowed activity to the point of immobilization); cera flexibilitas (the person can be molded into strange postures that are maintained), and catatonic excitement (agitated, purposeless movements).
Delirium – A reversible syndrome of bewilderment, restlessness, confusion, and disorientation, associated with fear and hallucinations, all caused by some underlying medical condition.
Delusion – a firmly fixed false belief, one not based in reality. It can be bizarre, as in schizophrenia, or systematized as in delusional disorders.
Dementia – a loss cognitive function, often first manifesting in memory loss.
Depersonalization – subjective feeling of being unreal, or unfamiliar to self.
Derealization – a subjective feeling that the environment is strange or unreal; for instance, feeling the world to be a stage or two-dimensional painting.
Dissociation – confusion in the unitary sense of self and identity.
Formication – the feeling that insects are crawling all over one’s body, a tactile hallucination caused by cocaine and delirium tremens.
Hallucination – a perception of a sensory stimulus in the absence of sensory stimulus.
Illusion – the misperception of a sensory stimulus; for instance, seeing the rustling of branches of a tree as tentacles.
Logorrhea – copious, coherent, logical speech.
Mania – a mood characterized by elation and increased activity.
Mood – a pervasive feeling that is experienced internally.
Neurosis – this term refers to the theory of intrapsychic conflicts resulting in symptoms of depression, anxiety, ect. The neurotic patient is in relatively good mental health compared to schizophrenic.
Noesis – a revelation in which immense illumination occurs in association with a sense that one has been chosen to lead a command.
Obsession – an idea or thought that constantly intrudes into consciousness.
Paranoia – persistent, consistent, plausible, and ingenious delusions of persecution or jealousy. New information always seems to support the increasing threat of some great conspiracy. Paranoia is more a symptom than a disorder, as it can appear in schizophrenia, manic, ect.
Psychosis – symptoms consisting of thoughts and perceptions that are out of touch with reality.
Somnambulism – sleepwalking.
Somnolence – abnormal drowsiness.
Synthesia – sensation caused by another sensation; for instance, seeing sound.
Tic – involuntary spasmodic motor movement.
Trailing phenomenon – perceptual abnormality associated with hallucinations in which moving objects are seen in a series of discrete discontinuous images.
Trance – focuses attention and altered consciousness, usually seen in hypnosis, dissociative disorders, and ecstatic religious experiences.