Forgetful

You give them a task, and five minutes later, they act like they don't remember you, much less what you're talking about

Poor focus

They just don't look like they're paying attention to what you're saying.

Not caring

They don't seem to care what's happening around them.

Careless

They often fail to give close attention to details, or make careless mistakes, (school)

Outbursts

Frequent vursts of energy, bouncing off the walls

Interrupting

Interrupt people and activities in class and at home.  Barge right in like only perons

Fidget

Almost constantly, can't sit still