We don't have synonyms for katatonia yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are catatonic, catatonia and katatonic.
(n) :
Alternative form of catatonia. [A severe psychiatric condition, often associated with schizophrenia, characterized by a tendency to remain in a rigid state of stupor for long periods which give way to short periods of extreme agitation.]
(n) :
Alternative form of catatonia. [A severe psychiatric condition, often associated with schizophrenia, characterized by a tendency to remain in a rigid state of stupor for long periods which give way to short periods of extreme agitation.]