CLINICAL MEDICINE

Detailed explanation-1: -A hallucination is a false perception of objects or events involving your senses: sight, sound, smell, touch and taste. Hallucinations seem real, but they’re not. Chemical reactions and/or abnormalities in your brain cause hallucinations.

Detailed explanation-2: -A pseudohallucination (from Ancient Greek: (pseudḗs) “false, lying” + “hallucination") is an involuntary sensory experience vivid enough to be regarded as a hallucination, but which is recognised by the person experiencing it as being subjective and unreal.

Detailed explanation-3: -A delusion is a belief that is clearly false and that indicates an abnormality in the affected person’s content of thought. The false belief is not accounted for by the person’s cultural or religious background or his or her level of intelligence.

Detailed explanation-4: -Psychotic disorders are severe mental disorders that cause abnormal thinking and perceptions. People with psychoses lose touch with reality. Two of the main symptoms are delusions and hallucinations.

Detailed explanation-5: -Hallucinations are perceptual disturbances in the absence of external stimuli. An example of a delusion may be if you believe that the government is monitoring your every action through a microchip inserted in your brain, despite all objective evidence being contrary to this belief.