admin July 30, 2026
Can Dehydration Make Tremors Worse? The Link Between Hydration and Neurological Health
Water is necessary for proper bodily function. Even healthy brain function depends on adequate hydration. Most people don’t know that staying hydrated may alter the way some people experience certain neurological symptoms. If you have essential tremor or Parkinson’s, you may have experienced your hands becoming shakier after hot days, strenuous exercise, or just not drinking enough fluids.
Movement disorders don’t develop from dehydration. But the effects of dehydration on concentration and muscle function may lead to the perception of worsened tremors.
Using the knowledge of how hydration affects neurological function, you may be able to manage your symptoms with slight alterations to your daily routine.
What Are Tremors?
Tremors are the involuntary shaking of a certain body part, affect articulation of speech, and may even affect your voice.
The two most common neurological disorders that affect those with tremors are:
- Essential tremor, in which most of the shaking occurs in the presence of a posture.
- Parkinson’s disease, in which tremors affect body parts that are at rest and have a host of other movement-related symptoms.
While these disorders have completely different origins and causes, both may be affected from time to time by the same factors: stress, fatigue, or even dehydration.
Do you shake more when you’re dehydrated?
Possibly. Dehydration usually only temporarily makes tremors more severe and doesn’t really make nervous system disorders progress faster.
There is an ideal fluid and mineral balance that the nervous system needs for optimal function. When the body is losing more water than it is taking in, the balance may be disrupted. This can lead to poor control of muscles, poor signalling of nerves, and poor physical performance.
People who have essential tremors and/or PD may find that their tremors become more difficult to control and more severe when they are dehydrated. Symptoms may become more severe even when the person is only a little dehydrated.
Importance of Hydration for the Nervous System
Water is very important to the nervous system and is important for…
- Maintaining healthy nerves
- Helping brain cells communicate.
- Regulating temperature of the body
- Changing the composition of the blood
- Normal functioning of muscles
When you do not have enough water, the nervous system and body begin to slow. This makes concentration difficult, and tremors may worsen.
Signs of Dehydration
Especially in the elderly, it can be difficult to notice dehydration.
Signs of dehydration may include:
- thirst
- dry lips or mouth
- dark, infrequent urination
- headaches
- dizziness
- fatigue
- loss of concentration
- muscle cramps
- weakness
More severe dehydration can cause serious problems, and delays in treatment may become deadly.
Symptoms of Essential Tremor and Parkinson’s Disease
Essential Tremor
Common Symptoms Identified:
- Shaking of hands when moving
- Neatness of handwriting
- Difficulty eating and drinking without spilling
- The urge to shake an object
- The head or voice shakes for some.
- Stress or tiredness can cause strong tremors.
Parkinson’s Disease
Common Symptoms Identified:
- Tremors at rest
- Slow movement
- Muscle stiffness
- Difficulty walking
- Balance issues
- Speech becomes softer
- Posture changes
- Facial expressions become minimal.
All of the above, or some of the above, may be caused by dehydration if the symptoms worsen greatly at one time. Medical attention may be needed.
Diagnosing Tremors
Tremor disorders are usually diagnosed by a neurologist through an in-depth and complete examination. This may include, but is not limited to, the following:
- Answers to questions related to your medical history.
- Questions regarding the timing of tremor occurrences.
- An evaluation of symptoms.
- The performance of a neurological examination.
- The observation of tremors at rest and in movement.
- An evaluation of the strength of the tremor through the performance of balance and coordination tests.
The physician may also request that you perform one of the following: write, draw a spiral, or hold the arms at a certain position. Essential tremor is not diagnosed through blood tests or imaging studies. Other medical conditions may be excluded through these studies.
Daily Hydration
Overall health and the symptoms that feel the worst may be lessened by contributing to good hydration. However, good hydration does not heal or bring a cure to neurological disorders.
Beneficial habits:
- Frequent water consumption throughout the day
- Summer heat = more water
- Workout = water post workout
- Less alcohol
- Less caffeine, especially if it makes you jittery or makes you lose fluids
- Start eating foods like cucumbers, oranges, watermelon, and soup
If you have a heart or kidney condition, you should talk to your doctor about your fluid intake.
When to talk to someone?
Talk to a medical professional if…
- Your tremors get worse a lot and/or you have new issues with your nervous system.
- You get dehydrated again and again.
- Your symptoms have gotten worse, and your medication doesn’t help.
- Your daily tasks get harder and harder to do.
You should see a neurologist to get your symptoms and medication reviewed on a regular basis.
What are the treatment options?
It all depends on the cause of the tremors and how bad they are.
For most people, the tremors and symptoms get easier to manage with medication, physical therapy, and good lifestyle habits.
For a small group of patients who have really bad essential tremors and don’t respond to medication, MRI-Guided Focused Ultrasound (MRgFUS) can be used as therapy. This is a non-invasive procedure that focuses on the brain and the area that is causing the tremors and symptoms, and it doesn’t require surgery. A neurologist can tell if this treatment is appropriate.
The bottom line
Dehydration doesn’t cause essential tremors or Parkinson’s. While it doesn’t directly influence those conditions, it can cause the symptoms and nervous system function to get worse. Staying hydrated is a great way to help your nervous system.
Along with seeing your doctor and taking your medicine, a healthy diet and hydration help manage and reduce things that aggravate tremors. If you notice changes in your symptoms, don’t just assume you’re dehydrated. You should always reach out to your neurologist.
FAQs
1. Can dehydration cause worsening hand tremors?
Yes. Dehydration may worsen hand tremors due to increased muscle dysfunction, nerve dysfunction, and decreased energy. Adequate hydration can lessen these problems.
2. How much water should a person with essential tremors or with Parkinson’s Disease drink?
Requirements and recommendations of water intake vary due to age, activity and overall health. The majority of people should drink small amounts throughout the day. However, people with cardiac and renal diseases should follow their doctor’s recommendations.
3. Will essential tremor go away if I drink more water?
No. Essential tremor and essential tremor caused by Parkinson’s disease won’t go away by drinking water. Staying hydrated helps your overall health and may help ease some of the symptoms that worsen due to dehydration.