Mutism and akinesis in a person who appears awake and even ale is best described as
Twilight state
Oneroid state
Stupor
Delirium
Stupor: Akinesis (no movement) with mutism but with evidence of relative preservation of conscious awareness. the most impoant psychiatric disorders in which the patient presents with stupour is catatonia which is a type of schizophrenia and dissosiative stuour which is a type of neurotic illness. catatonic stupour has a good response with electro convulsive therapy and lorazepam dissosiative stupour has a good response with psychotherapy and narcoanalysis and working on the stressors in patients life. Ref: A Sho Textbook of Psychiatry, Niraj Ahuja, 7th Edition, pg. no.59 synopsis of psychiatry, kaplan and sadock, 11th Edition, pg. no.309
Symptoms and signs in psychiatry and classification