Which of the following is true about multiple sclerosis except

. *Multiple sclerosis is characterised by prominent nystagmus which is observed in the abducting eye,along with a small skew detion . *A bilateral internuclear ophthalmoplegia is paicularly suggestive of MS *Other common gaze disturbances in MS include (1) horizontalgaze palsy (2)a "one and half"syndrome (3)acquired pendular nystagmus . Ref Harrison20th edition pg 2567