Can nervous disorders be cured? Will enough research be the answer?
Yes, levodopa type treatments for parkinsons.

epilepsy: 
In 2017, 116 children were randomly assigned to undergo epilepsy surgery or receive medical treatment. After 12 months, 77% of the children who had undergone surgery were seizure free compared with 7% who received medical treatment.

Check news and histories of advances in neuroscience and neurology.

Every year drugs improve, it's best to stay objective in the face of mind dysfunction, meditate.