@keithl56 We had never heard of 3PD before, either. I would say CSVD can result in it because at the root of my husband‘s ongoing strokes ( known and silent ) is his small vessel disease. Two of his five strokes were cerebellar, which controls balance, movement, gait, and more. It’s important to note that cerebellar strokes present with very different symptoms, which are often missed in the ER and therefore delay the patient being placed on stroke protocol. The symptoms mimic many other things. Symptoms my husband had were dizziness, extreme vomiting, and eventually hiccups. With the second Cerebellar stroke, he also had some of the more traditional symptoms, such as eyelid and mouth drooping and slurred speech.