Which condition is NOT a result of a chronic neurodevelopment disorder?

Ototoxic hearing loss is associated with the effects of certain medications or substances that are toxic to the ears, leading to auditory damage. It is typically a result of external factors such as exposure to ototoxic drugs, rather than an inherent neurodevelopmental condition. In contrast, conditions like Down Syndrome, Autism Spectrum Disorder, and Attention Deficit Hyperactivity Disorder all stem from neurodevelopmental disorders, which affect the brain's development and function throughout a person's life. These conditions arise within the context of genetic or environmental influences that disrupt normal neural development, differentiating them from the effects seen with ototoxicity.