WORLD JOURNAL OF ADVANCE
HEALTHCARE RESEARCH

Fatema Ismail Amar*, Dr. Harsahaj Singh Wilkhoo MD

ABSTRACT

Background: Recurrent zoning-out episodes in adults are a common yet frequently underrecognized clinical presentation. Although often attributed to inattention, psychiatric disorders, or transient cognitive lapses, these episodes may represent transient impairment of awareness caused by absence seizures, focal impaired-awareness seizures, or other nonconvulsive epileptic phenomena. Delayed recognition contributes to diagnostic uncertainty, inappropriate treatment, and preventable morbidity. Objective: This narrative review summarizes the current evidence regarding the neurobiology, clinical presentation, differential diagnosis, neurodiagnostic evaluation, and emerging diagnostic approaches for adults presenting with recurrent zoning-out episodes, with particular emphasis on the diagnostic role of absence seizures and related epileptic phenomena. Methods: A narrative literature review was performed following PRISMA-guided literature identification. Electronic databases were systematically searched for English-language publications addressing transient impairment of awareness, absence seizures, focal impaired-awareness seizures, consciousness, electroencephalography, and emerging diagnostic technologies. Eligible studies, clinical guidelines, and review articles were synthesized narratively. Results: Current evidence indicates that transient impairment of awareness arises from dysfunction of distributed cortico-thalamic, frontoparietal, salience, and default mode networks. Adult absence seizures remain underrecognized and frequently mimic psychiatric, cognitive, and attentional disorders. Careful clinical assessment, electroencephalography, prolonged video-EEG monitoring, and neuroimaging remain fundamental for accurate diagnosis. Emerging technologies, including wearable devices, artificial intelligence-assisted EEG interpretation, digital phenotyping, and biomarker discovery, may further improve early recognition. Conclusion: Clinicians should maintain a high index of suspicion for epileptic causes of recurrent zoning-out episodes in adults. Earlier diagnosis through comprehensive clinical assessment and evolving neurodiagnostic technologies may reduce diagnostic delay, facilitate timely treatment, and improve long-term patient outcomes.

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