Is it possible to have multiple sclerosis with many ms symptoms and white matter changes on the brain and not actual lesions?ep's were normal also.

Straightforward: Severity of ms varies, and even benign cases, but diagnosis is based on history and exam and supportive lab studies. Evoked potentials usually worthless, and not used routinely. Mri of neck showing just one lesion could be confirmatory, or change of brain MRI also supportive. In some cases, spinal fluid analysis helps. However, you may possess a different condition. Maybe a second opinion?