This case report highlights the role of hyperglycaemia in a dissociative syndrome that may be overlooked by physicians, until it results in significant consequences. Traditionally dissociation is considered as an escape from overwhelming distress with partial or complete loss of control on voluntary actions or alienation of oneself or external world. Possible biological factors implicated in pathogenesis include reduced perfusion in inferior prefrontal and anterior temporal regions in the right hemisphere and abnormal functioning of the Hypothalamo-Pituitary-Adrenal dysfunction, Glutamate/N-Methyl-D-Aspartate (NMDA) receptor, Serotonin (5-HT2a, 5-HT2c), Gama-Amino Butyric Acid (GABA), and Opioid receptors.