The alien limb phenomenon is a phenomenon in which patients experience involuntary movements in a limb, which is accompanied by a feeling that the limb does not belong to them. There is some evidence to support the notion that alien … Continue reading →

Contrary to the dimensional approach, categorical approaches focus on the presence or absence of a particular condition or set of symptoms. The most commonly used diagnostic manuals, such as DSM and ICD use a categorical approach in their classification of … Continue reading →

Childhood disintegrative disorder, as described in ICD-10, is a pervasive developmental disorder seen in infants, in which a period of normal development is followed by a period in which the child loses acquired skills. Examples can include deterioration in social behaviours, … Continue reading →

Catalepsy is a psychomotor disturbance in which a person maintains a fixed bodily posture, and may also maintain a bodily posture that someone else moves them into.  

Capgras syndrome is a disorder in which an individual holds the delusional belief that a person they are familiar with is in fact an impostor who has replaced the real person. The syndrome has been observed in individuals with brain … Continue reading →