Signs of ADHD may mask other illnesses like anxiety, depression, bipolar disorder, etc. To be diagnosed with ADHD your child must have displayed ADHD symptoms before the age of seven. Their signs of ADHD must occur often and their symptoms must be exaggerated or severe.
According to the National Institute of Mental Health (NHMH) the following are ADHD symptoms and ADHD signs:
• Hyperactive
• Impulsive
• Inattention
ADHD hyperactive symptoms include:
• Have difficulty doing quiet tasks or activities
• Have trouble sitting still during dinner, school and story time
• Talk non-stop
• Fidget and squirm in their seats
• Dash around, touching or playing with anything and everything in sight
• Constantly in motion
ADHD impulsive symptoms include:
• Often interrupt conversations or others' activities
• Have difficulty waiting for things they want
• Have difficulty waiting their turns in games
• Very impatient
• Blurt out inappropriate comments, show their emotions without restraint, and act without regard for consequences
https://www.empowher.com/attention-deficit-hyperactivity-disorder-adhd/content/adhd-signs-and-symptoms