C. D. stands for "Cerebral Dysgenesis," a term used to describe abnormal brain development. This condition can result in various neurological issues, including cognitive impairments and motor difficulties. It may arise from genetic factors, prenatal exposure to toxins, or infections during pregnancy. C. D. can be diagnosed through imaging techniques like MRI or CT scans, which help visualize brain structure. Treatment often involves a multidisciplinary approach, including physical therapy, occupational therapy, and educational support to help individuals manage their symptoms and improve their quality of life.