Hallucinations: These are perceptual experiences that occur without any external stimuli. In schizophrenia, hallucinations often involve seeing or hearing things that others cannot perceive.
Delusions: Delusions are fixed false beliefs that persist despite evidence contradicting them. Individuals with schizophrenia may have delusions of grandeur, persecution, or reference.
Negative Symptoms: Negative symptoms refer to the absence or reduction of normal functions or behaviors. In schizophrenia, negative symptoms can include social withdrawal, lack of motivation, and diminished emotional expression.