Highlights in motion blur


Hi, I am creating a rain stuff in which I need highlights in water drops. Right now the illusion of drops is created by object motion blur. Geometry shape is sphere. What I am trying to achieve is highlights with breakups, not a constant highlight streak. I have also tried Camera shader, HDR Image Motion Blur in mentalray which is giving a streak of highlight which I don’t want.
Is it possible to create highlights in motion blur? Or is there any other way to achieve it?