Catatonic Depression.

This isn't really what you are asking for, but could you explain what catatonic depression is? I am only aware of pop culture references to catatonic states.

Here is a description of Canatonic Depression


*

Catatonic Depression - (Sub-type of Major Depressive Disorder) – This type of depression is characterized by at least two of the following:
o Loss of voluntary movement and inability to react to one's environment
o Excessive movement (purposeless and not in response to one's environment)
o Extreme resistance to instructions/suggestions or unable/unwilling to speak
o Odd or inappropriate voluntary movements or postures (e.g. repetitive movements, bizarre mannerisms or facial expressions)
o Involuntarily repeating someone’s words or movements in a meaningless way

Treatment will differ depending on the type of depression based on its severity and various symptoms. For example, the focus of therapy may vary or different antidepressants may be prescribed targeting certain symptoms.

I've never been diagnosed but I fit a lot of the critera posted above..