Several types of medications, as well as surgery, are often the treatments for shaking hands and tremor caused by Parkinson's disease, according to Mayo Clinic. Many patients experience results, but they may diminish or become less consistent over time.
The most effective medication, as of 2015, for Parkinson's-related symptoms is levodopa, a drug that converts into dopamine, Mayo Clinic reports. It is often combined with carbidopa, a medication that keeps levodopa from converting into dopamine before it reaches the brain. Doing so lessens nausea, which is a side effect of levodopa.
Another type of medication used are called dopamine agonists, Mayo Clinic states. These medications mimic dopamine's effects on the brain. They usually are not as effective as levodopa, but are often used to increase its effectiveness or smooth out the inconsistent effect of the medication.
Other medications, such as MAO-B and inhibitors, inhibit the breakdown of dopamine in the brain by certain enzymes, Mayo Clinic says. They are not as commonly used because of the higher risk of side effects.
A common surgical procedure for Parkinson's symptoms is called deep brain stimulation (DBS), Mayo Clinic states. It involves placing electrodes in a specific part of the brain that are connected to a generator implanted in the chest that sends electrical impulses to the electrodes. DBS helps with tremors and symptoms that are lessened by levodopa.