What is the definition or description of: catatonic schizophrenia?

Catatonic: Catatonia, which is characterized by motoric immobility (inability to move) such as catalepsy or stupor (significant altered levels of consciousness) , mutism( inability to speak) , negativism , is shown in about 10-15% of patients with schizophrenia. The can respond to benzodiazepines, Abilify (aripiprazole) and electroconvulsive therapy.

Subtype of Disorder: The catatonic type of schizophrenia is dominated by movement abnormalities and possibly speech abnormalities. Immobility, purposeless activity, and rigid or bizarre postures, are examples of catatonic behavior. These behaviors occur in a context of characteristic symptoms of schizophrenia.