hallucinations
n. countablen. the experience of seeing, hearing, or feeling things that are not actually there. These happen when your brain creates a false reality, often due to illness or lack of sleep.
n. sensory perceptions that occur in the absence of an external stimulus. Often associated with neurological conditions, psychological distress, or chemical influence.
High fevers can sometimes cause hallucinations.
After three days without sleep, the hiker began to experience vivid hallucinations of water in the distance.
Clinical research suggests that auditory hallucinations are more common than visual ones in certain psychiatric conditions, often manifesting as voices that the patient perceives as external to their own thoughts.
Commonly used in the plural to describe a series of episodes; the singular form refers to a specific instance.