"Attention difficulties" refers to difficulty in focusing or paying attention to something for a certain period of time. It means having trouble concentrating or staying focused on a task or activity. Full definition
Attention difficulties also can result from hearing or vision problems. (educationworld.com)
Put distractions together with typical attention difficulties and we have a recipe for not learning. (elearningindustry.com)
In the previous chapter, I suggested that each child who displays behavior and attention difficulties possesses a unique constellation of factors that defines his individual world. (ascd.org)