Double Vision Diplopia (double vision) is simultaneously seeing two images of a single object without the help of psychedelics. Thanks for that, MS. Other Terms Cog fog AKA brain fog, difficulties in keeping thoughts straight. Cognitive Impairment A slight decline in memory is often linked to MS. Computerized Axial Tomography An x-ray of the entire body to help pinpoint MS symptoms. Degenerative Disease The name for health conditions that worsen over time. View More