Tremor is the most common disorder of movement. For many patients a new tremor can be worrying because the first thought is often “Is it Parkinson's disease?”
Tremors occur at rest, when doing things with the hands, or just holding the arms out. The occurrence of tremor in different positions and other assessment by a neurologist allow refinement of the diagnosis.
The most common tremor disorder is Essential Tremor, which often occurs in families (25%). It is usually easy to differentiate from Parkinson’s tremor, and that may help guide treatment. However, not all tremor needs treatment.
Many other tremor disorders exist and different treatments are available, most of which involve oral medication. Novel treatments such as Botox/Botulinum toxin injection can help. More advanced treatment including deep brain stimulation can also help tremor a lot if refractory to oral/injection treatments.