Neuro-Developmental Delay (NDD) is a neuro – physiological, physical disorder resulting from diffuse, subtle damage to, or disrupted development of, the Central Nervous System (CNS). NDD can give a very puzzling picture for diagnosis---it disturbs the brain’s function, but does not affect the brain’s structure. A child with NDD will exhibit disturbances in specific types of brain function, but the CT scan and MRI will be normal.