The essence of catatonia symptoms are: movement disorders, mutism, negativism, waxy flexibility, stereotypical movement, impulsive actions, duality, and paramimics. It is a psychosis that affects movement and speech. Lethal catatonia is a life-threatening psychiatric syndrome which is very difficult to differentiate because of prevailing somatic and neurological symptoms and still remains a very difficult question in psychiatry. The outcome depends on rapid detection and complete treatment.