Which term describes a tremor that occurs during voluntary movements and increases as the limb approaches the target?

The term that describes a tremor occurring during voluntary movements and increasing as the limb approaches the target is intention tremor. This type of tremor is typically associated with cerebellar dysfunction, where the cerebellum plays a crucial role in coordinating muscle movements and ensuring precision. As a person attempts to reach a target or perform a task, the intention tremor becomes more pronounced as precision is required, resulting in increased shaking as the limb gets closer to the desired position.

In contrast, other types of tremors, such as postural tremors, are typically noticeable when a person is maintaining a position against gravity and do not intensify during the approach to a target. Resting tremors are observed when a limb is at rest and are not related to voluntary movement. Bradykinesia refers to slowness of movement, rather than a specific type of tremor, and does not encompass the characteristics of tremors occurring with voluntary movements. Thus, intention tremor accurately captures the phenomenon described in the question.