Catatonic features

Catatonic features is a term that is used to describe a mood episode having abnormal, limited, excessive, or echoing movement.
==Catatonic features in the DSM==
The DSM uses catatonic features to describe the following mood episodes:
*Major depressive episode
*Manic episode
*Mixed episode
This specifier is not used for Hypomanic episodes, most likely because because if catatonic features are present the episode is better described as a Manic episode. 
Catatonic features are described by the DSM as having 2 or more of the following symptoms:
*immobility, staying in the same position (unless moved by someone else), or unconsciousness
*excessive movement that doesn't have an apparent purpose or relation to the environment
*extreme resistance to all instructions, maintaining a rigid posture, or refusal to speak
*peculiar movement such as bizarre posturing, stereotyped movements, prominent mannerisms, or prominent grimacing
*imitating another person's speech or movement