Other nervous system disorders that are neither hereditary nor degenerative can arise from a variety of environmental and lifestyle factors. Common causes include traumatic brain injuries, infections such as meningitis or encephalitis, exposure to toxins, and autoimmune reactions that affect nerve function. Additionally, certain metabolic imbalances and nutritional deficiencies, particularly deficiencies in vitamins B1, B6, and B12, can contribute to the development of these disorders. Stressful life events or chronic stress may also play a role in exacerbating symptoms related to the nervous system.