adhs letters adhd in german language on wooden blocks on the blue background with different s

circle font art number toy blue design line text purple games play symmetry yellow brand green adhd adhs hyperactivity abbreviation anatomical attention background behavior behavioral blocks bored brain care chaos chaotic children color colorful colors concentration concept creative cubes deficit despair development diagnosis disorder distracted early education endocrine german language letters medical mosaic note red shape shapes sign texture vertical wood wooden signage