This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bipolar Disorder, Subject name: Psychiatry
According to the ICD-10 revision, for establishing a diagnosis of mania, the symptoms should persist for at least: 
Select and explain. 
A. 1 week, B. 2 weeks, C. 3 weeks, D. 4 weeks
A: 1 week
Answer: A: 1 week 
Explanation: Ans. a. 1 week (Ref: Niraj Alhuja 6/e p75- 76)According to the ICD-10 revision, for establishing a diagnosis of mania, the symptoms should persist for at least 1 week.Diagnostic Criteria of Manic EpisodeAbnormality and persistently elevated, irritable or expensive mood for >1 weekQ or need hospitalization>=3 of these hyperactivities:Decreased need of sleepsIncrease in goal orientated activityQ (social, spiritual, sexual, religious)Excessive involvement in pleasurable activitiesQ (unrestrained buying sprees, foolish business investments, donations or sexual indiscretion) that have a higher potential for painful consequencesMore talkative or pressure to keep talkingQInflated self esteem or grandiosityQDistractibilityQFlight of ideas or racing thoughtsQ