Q: What is ADHD? A: The full name of ADHD is Attention Deficit Hyperactivity Disorder (ADHD), and there are three subtypes: Attention Deficit Disorder, Hyperactive Impulsive Disorder, and Mixed Disorder. Q: How many children develop ADHD? A: Studies have reported 3-5%, so in a typical classroom there may be 1-2 children with ADHD. Q: Are boys more likely to have ADHD than girls? A: Yes, the male to female ratio is about 3-4:1 Q: Can all pediatricians diagnose and treat ADHD? A: Only specially trained doctors are better at diagnosing and treating ADHD, just as not all pediatricians are good at treating children with epilepsy. And more children with ADHD are currently undiagnosed than overdiagnosed. Q: What tests are done in the hospital for ADHD? A: 1. Tests for attention and intelligence. 2.Micronutrient and electroencephalogram (EEG): Considering the future treatment and eliminating some other diseases that may cause hyperactivity, the doctor usually suggests to do a micronutrient test and an EEG test. The trace element test requires children to take venous blood on an empty stomach, and there is a regular, experienced professional nurse to take the blood on Wednesdays, so parents are advised to bring their children on Wednesdays to take the test on an empty stomach; while the EEG is basically tested every day.