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Oneirophrenia (from the Greek words "ὄνειρος" (oneiros, "dream") and "φρήν" (phrēn, "mind")) is a hallucinatory, dream-like state caused by several conditions such as prolonged sleep deprivation, sensory deprivation, or drugs (such as ibogaine).
Gustatory, olfactory and thermal sensations in hypnagogia have all been reported, as well as tactile sensations (including those kinds classed as paresthesia or formication). Sometimes there is synesthesia; many people report seeing a flash of light or some other visual image in response to a real sound.
Derealization can accompany the neurological conditions of epilepsy (particularly temporal lobe epilepsy), migraine, and mild TBI (head injury). [12] There is a similarity between visual hypo-emotionality, a reduced emotional response to viewed objects, and derealization.
Others remembered dreamlike sensations, such as being chased by the police or being caught in the rain. Some survivors had positive memories, such as seeing a light, a tunnel or a family member ...
Derealization is described as detachment from one's surroundings. Individuals experiencing derealization may report perceiving the world around them as foggy, dreamlike, surreal, and/or visually distorted. [5] Depersonalization-derealization disorder is thought to be caused largely by interpersonal trauma such as early childhood abuse.
Oneiroid syndrome is distinguished by the fantastical and dreamlike nature of its psychotic experiences. [5] Key features include conflicting emotions, contradictory thoughts, and actions, as well as a profound sense of dramatic changes in reality. Patients often experience mixed feelings of triumph and catastrophe simultaneously. [5]
Depersonalization is a dissociative phenomenon characterized by a subjective feeling of detachment from oneself, manifesting as a sense of disconnection from one's thoughts, emotions, sensations, or actions, and often accompanied by a feeling of observing oneself from an external perspective.
sensations of falling or movement; experiencing of unusual feelings or sensations; altered sense of hearing, smelling, tasting, seeing, and tactile perception (sensory illusions or hallucinations), or feeling as though the environment is not real (derealization) or dissociation from the environment or self (depersonalization)