Do lesions have to be in brainstem to cause acute diplopia lasting 14 days in ms or is it a general sympton anyway?

Diplopia: Double vision has many causes. Any disorder that disrupts the fine balance between the eyes can cause diplopia. This can occur with ms lesions in many parts of the brain, since the nerves controlling eye movement travel from the brainstem to the eyeballs. There are other causes of dipopia, such as cataracts, which are not related to ms.

Diplopia in MS: The lesion can be anywhere in the visual pathways andnor just thebrain stem. See an eye doctor.

Relapse: Do you have MS? or is your problem cerebrovascular disease associated with PFO and maybe paradoxical emboli?? If there is diplopia in MS, lasting 2 weeks, this would be a relapse, and area of inflammation would be usually in brainstem, and maybe visible on MRI. Diplopia is NOT a general symptom in MS and varies from pt to patient.