This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Child psychiatry, Subject name: Psychiatry
Stimulant drug is given to child for the treatment of 
Select and explain. 
A. Conduct disorder, B. Speech developmental disorder, C. Pervasive disorder, D. ADHD
D: ADHD
Answer: D: ADHD 
Explanation: Stimulant medication- dextroamphetamine and methylphenidate have been traditionally used for the treatment of attention deficit hyperactivity disorder. Methylphenidate is the currently the drug of choice. it acts on the reticular activating system, causing stimulation of the inhibitory influences on the cerebral coex, thus decreasing hyperactivity and /or distractability (Ref: a sho textbook of psychiatry, Niraj Ahuja,7th edition, pg no 167)