Which condition is characterized by a progressive tremor that improves after alcohol consumption?

The condition characterized by a progressive tremor that improves after alcohol consumption is essential tremor. Individuals with essential tremor typically experience an intention tremor, which is most noticeable when they are trying to perform purposeful movements, such as writing or holding a cup. One of the defining features of essential tremor is that many patients report a temporary alleviation of their tremor symptoms after consuming alcohol. This phenomenon can be attributed to the fact that alcohol has a sedative effect, which may help stabilize the motor control mechanisms in the brain.

In contrast, other conditions listed do not share this specific relationship with alcohol. Huntington disease is associated with uncontrollable movements and cognitive decline, rather than an improvement of tremors with alcohol. Parkinson disease involves tremors that are usually at rest and may not show improvement with alcohol intake. Wilson disease is primarily a disorder of copper metabolism that can lead to neurological and psychiatric symptoms, but tremors associated with this condition do not typically improve with alcohol consumption. Understanding these distinctions helps clarify why essential tremor is the most fitting diagnosis among the options provided.