Essential tremor (ET) is a neurological condition characterized by uncontrollable shaking, predominantly affecting the hands, head, and voice. It’s distinguished from other tremor disorders, such as Parkinson’s disease, by its unique symptoms and triggers. Understanding the causes, symptoms, and available treatments for ET is crucial for those affected.
Patients with essential tremor often experience a shakiness in their voice. This can be identified by slight variations in the patient’s voice during vocalization. The resting tremor, a key characteristic of conditions like Parkinson’s disease and drug-induced parkinsonism, is observed when the patient is at rest. Conversely, essential tremor is an action tremor, meaning the involuntary shaking intensifies during movement and hand usage.
Another common manifestation of essential tremor is a postural hand tremor or an intention tremor, as explained by Dr. Umeh. Essential tremor can also cause head nodding or shaking, which is less common in Parkinson’s disease.
Symptoms of essential tremor may include lightheadedness, dizziness, fatigue, difficulty concentrating (also known as brain fog), palpitations, and other digestive issues. These symptoms are similar to those experienced by people with Postural Orthostatic Tachycardia Syndrome (POTS), which includes lightheadedness and a racing heart.
The onset of essential tremor is usually mild but can progress over time, potentially affecting the legs and trunk. It is often inherited and is the most common of more than 20 types of tremor. The condition usually begins in middle age and varies in intensity, affecting different parts of the body.
Causes of lightheadedness, a symptom associated with essential tremor, may include dehydration, side effects from medication, sudden drops in blood pressure, low blood sugar, and even heart disease or stroke. If tremors or shakiness are sudden or recent, consulting a doctor is advisable as they could signify a serious condition like Parkinson’s disease.
For more detailed information about essential tremor and its management, the following resources can be helpful:
Stanford 25 on Involuntary Movements and Tremors
Harvard Health on Shaky Hands
Harvard Health on Essential Tremor Management
Harvard Health on POTS
University of Utah Health on Essential Tremor
