The World Health Organization has described hyperglycemia. Fasting blood glucose levels are defined by the World Health Organization (WHO) greater than 7.0 mmol/L (126 mg/dL) and/or after a meal. Glucose levels in the blood (two hours after meals) are higher than 11.0 mg/dL (200 mg/dL).Diabetes is characterized by hyperglycemia. Mellitus is a type of diabetes (Types 1 and 2). A 60-year-old man from the city presented to the psychiatry OPD with symptoms of disinhibited conduct, sleep disturbances, and anxiety. Since 4 days, there has been an increase in activity and chat. 'The onset of symptoms was sudden, and they progressed. There was no evidence of excessive religiosity or over-religion in the past. Overspending, overgrooming, and familiarity patient is a has no history of mental illness or drug abuse. Symptoms of depression or anxiety are both possible. Psychiatric symptoms associated with hypoglycemia are well-known, and they can range from delirium and depression to insanity. Diabetes and depression have been shown to occur together in clinical and general population research. This co-occurrence is linked to increased functional disability as well as mortality. This case study aims to highlight the importance of a thorough evaluation of a patient who presents with sudden development of behavioural symptoms, as well as the likelihood of organic psychiatric conditions in such patients. It also entails justifiable liaison psychology consultations in other areas such as medicine and neurology. The authors also stress the need for further research into the cause, occurrence, and treatment of mania in hyperglycemia, given the scarcity of available literature