There are several types of tremors related to multiple sclerosis:
Postural tremors. You shake when you sit or stand, but not when you lie down.
Intention tremors. There’s no shaking when you’re at rest. It starts when you try to reach or grasp something or move your hand or foot to a precise spot. This is the most common form of MS tremor, and it usually causes the most problems in day-to-day life.
Nystagmus. This type of tremor causes jumpy eye movements.