A state of mental confusion marked by illusions,hallucinations,excitement,restlessness,delusions,and speech incoherence is ________.

Hallucinations

Perceptions in a conscious and awake state in the absence of external stimuli which have qualities of real perception, often related to visual, auditory, or other sensory experiences.

Delusions

Strongly held false beliefs not influenced by rational argument or evidence, often symptomatic of psychiatric disorders.

Incoherence

The quality of being illogical, unclear, or difficult to understand.