As stated in DSM 5  (The Diagnostic and Statistical Manual of Mental Disorders, 5^th Edition)

1.Often fails to give close attention to details or makes careless mistakes in school work, at work, or during other activities

2.Often has difficulty sustaining attention in tasks or play activities

3.Often does not seem to listen when spoken to directly.

4.Often does not follow through on instructions and fails to finish schoolwork, chores or duties in the workplace.

5.Often has difficulty organising tasks and activities.

6.Often avoids, dislikes or is reluctant to engage in tasks that require prolonged mental effort.

7.Often looses things necessary for tasks or activities

8.Is often easily distracted by extraneous stimuli

9.Is often forgetful in daily activities

10.Often fidgets with or taps hands or feet or squirms in seat

11.Often leaves seat in situations when remaining seated is expected.

12.Often runs about or climbs in situations where it is inappropriate

13.Often unable to play or engage in leisure activities quietly

14.Is often “on the go” acting as if “driven by a motor”

15.Often talks excessively

16.Often blurts out answers before a question is completed

17.Often has trouble waiting for their turn

18.Often interrupts or intrudes on others.