What Causes Finger Tremor? 10 Common Causes and the Warning Signs That Need a Doctor

Many people have noticed a slight tremor in their own fingers, particularly when holding a glass of water or using the hands for fine work. Sometimes it is only tiredness or stress, but sometimes it may be a warning from the body that should not be overlooked. Understanding the causes and knowing how to notice what is abnormal helps us look after our health in good time. In this article we will take you through the various causes of finger tremor, from ordinary causes that need not worry you to the warning signs that need a doctor soon.

What kind of finger tremor do you have?

Before understanding the causes of finger tremor, we should know the character of the symptom first, because each type of tremor may point to a different cause. Observing the symptoms in detail helps the doctor diagnose more precisely.

The character of the tremor: shaking at rest, or shaking in use

Finger tremor can be divided into two main kinds: resting tremor, which occurs when the hand is lying still and not in use, often found in patients with Parkinson's disease; and action tremor, which occurs when we are moving the hand, such as lifting a glass of water, writing, or pointing a finger, often found in essential tremor. Noticing when the symptoms occur helps to make the approach to treatment clearer.

Other accompanying symptoms to notice

Besides the character of the tremor, you should also notice other symptoms occurring with it, such as muscle stiffness, abnormal walking, headache, weakness, or problems with balance. These may point to a problem of the nervous system or another health condition that needs examination and diagnosis by a specialist physician. Keeping a note of the symptoms that occur is very useful in giving information to the doctor.

10 causes of finger tremor

Finger tremor may arise from many factors, from simple causes that can be corrected in daily life to serious diseases that need treatment by a doctor. Understanding these causes helps us to look after ourselves appropriately.

1. Too much caffeine

Caffeine is a stimulant commonly found in coffee, tea, energy drinks, and chocolate. Taken in excess, caffeine stimulates the central nervous system, producing a temporary tremor, particularly in the fingers and hands. The symptoms usually appear within 30-60 minutes of drinking and gradually disappear once the body has cleared the caffeine. Reducing the amount of caffeine, or avoiding it at times when the hands are needed for fine work, will solve this problem.

2. Alcohol

Alcohol affects the nervous system at several levels, both while drinking and after stopping. In those who drink regularly or heavily, a tremor may appear when the level of alcohol in the blood falls, which is called alcohol withdrawal tremor. In addition, chronic drinking damages the peripheral nerves, which can produce a permanent tremor.

3. Stress, anxiety, and exhaustion

Stress and anxiety are causes often found but often overlooked. When the body is in a state of stress, the sympathetic nervous system is over-stimulated, so that the heart beats faster, the muscles tighten, and a tremor appears, particularly in the hands and fingers. Exhaustion from not sleeping enough or working too hard also leaves the muscles less able to control movement. Resting enough, practising meditation, and managing stress greatly help reduce the symptoms.

4. Low blood sugar (hypoglycaemia)

When the level of sugar in the blood falls too low, the brain and muscles lack energy, so the body releases adrenaline to raise the sugar level, which produces tremor, irritability, sweating, palpitations, and fatigue. The causes are going without food for too long, exercising hard without eating, or, in patients with diabetes, taking too much sugar-lowering medicine. Eating at regular times, with healthy carbohydrates, helps prevent this problem.

5. Lack of vitamins and minerals

Certain vitamins and minerals have an important part in the working of the nervous system and the muscles. A lack of vitamin B12 affects the nerves directly, producing numbness, weakness, and tremor. A lack of magnesium and calcium also affects the contraction of the muscle, producing tightness, cramp, and tremor. The risk groups include those who do not eat a complete diet, older adults, patients with absorption problems in the digestive system, and vegetarians who do not supplement vitamin B12.

6. Stroke

Stroke arises when a blood vessel in the brain blocks or bursts, so that the brain does not receive enough blood. If the affected area of the brain is the part that controls movement, it may produce a tremor of the fingers or the hand on one side. Besides the tremor, other symptoms usually come with it, such as one-sided weakness, one-sided numbness, slurred speech, facial droop, staggering, or blurred vision. If these symptoms appear suddenly, you must see a doctor at once, because this is an emergency needing urgent treatment to prevent permanent disability or death. Rehabilitation after a stroke with physiotherapy helps reduce the tremor and restore the use of the hand.

7. Parkinson's disease

Parkinson's disease arises from the degeneration of the brain cells that produce dopamine, the neurotransmitter that controls movement. The distinguishing feature of the tremor in this disease is that it shakes at rest, particularly when the hand is lying still. It usually begins in one hand and then spreads to the other. There are other symptoms with it as well, such as muscle rigidity, slowed movement, poor balance, and a fixed facial expression. This disease is often found in older adults, but some people may begin to have symptoms from the age of 40-50. Treating Parkinson's disease requires a multidisciplinary team. At PYONG Rehabilitation Clinic we use modern treatment techniques such as Transcranial Magnetic Stimulation (TMS) and specialist physiotherapy programmes to improve movement and quality of life.

8. Essential tremor

Essential tremor is the most commonly found neurological condition causing tremor. It usually affects the hands, arms, and head. Its distinguishing feature is that the shaking increases with use, such as when picking things up, writing, or eating, and decreases when the hand rests. This condition usually has a genetic factor, the symptoms gradually worsen with age, and it may affect quality of life in fine work. Although it cannot be cured completely, the symptoms can be controlled with medication, physiotherapy, and changes of habit. For patients with essential tremor, PYONG Rehabilitation Clinic has specialist rehabilitation medicine physicians ready to work with specialist neurologists to plan comprehensive treatment, including medication, physiotherapy, and the use of Peripheral Magnetic Stimulation (PMS) technology, which helps stimulate the nerves and reduce the tremor.

9. Overactive thyroid (hyperthyroidism)

When the thyroid gland produces too much thyroid hormone, the body's metabolic rate increases, producing various symptoms such as finger tremor, hand tremor, palpitations, weight loss despite eating normally, sweating easily, irritability, sleeplessness, and fatigue. A blood test to measure the level of thyroid hormone helps confirm the diagnosis, and it can be treated with medication, radioactive iodine, or surgery as appropriate.

10. Repetitive strain from overusing the fingers

Using the fingers for repeated work over long periods — typing, using a mouse, gaming, or playing music — may leave the muscles of the fingers and the tendons of the hand inflamed, tight, and tired, producing a slight tremor in use. There may also be pain, numbness, or weakness of the hand. In severe cases it may develop into other conditions, such as trigger finger or numbness of the hand from the wrist (carpal tunnel syndrome). Resting the hand at intervals, stretching the muscles, and correcting the working posture help prevent and reduce the symptoms.

At PYONG Rehabilitation Clinic we offer examination, diagnosis, and treatment for pain from repeated use, as well as the muscle and nerve problems that may be the cause of finger tremor, with modern technology and a team of specialist physicians in rehabilitation medicine. We are ready to advise you and suggest the approach to treatment that suits you.

How does "finger tremor" differ from "hand tremor"?

Many people may confuse finger tremor with hand tremor, but these two differ in the area affected. Finger tremor usually occurs only in the fingers, in one finger or several. "Hand tremor" means shaking of the whole hand, or both hands, including the wrist and arm, which may affect the use of the hand in daily life more.

Distinguishing between them is important in diagnosis, because a tremor confined to the fingers may point to a local problem, such as trigger finger or overuse of the fingers, while shaking of the whole hand is usually related to a problem of the nervous system or to a disease with wider effects. Observing the symptoms in detail and describing them clearly to the doctor makes the treatment more effective.

Warning signs! What kind of finger tremor needs a doctor soon

Although finger tremor is not dangerous in many cases, there are some situations in which we should see a doctor soon for examination, diagnosis, and treatment. Knowing these warning signs helps us look after our health in good time.

• A tremor that steadily worsens. If you notice that the frequency and severity of the finger tremor are steadily increasing, or that it is beginning to affect daily life, you should see a doctor soon, because it may be a sign of a disease that is progressing.
• Other symptoms with it, such as muscle weakness, slurred speech, staggering, blurred vision, or dizziness. These may point to a problem of the nervous system or to a stroke needing urgent treatment.
• A tremor affecting daily life. If the symptoms mean you cannot do fine work — writing, eating, or pressing buttons on a phone — normally, the symptoms are severe enough to need assessment and treatment.
• Symptoms appearing suddenly, particularly together with other symptoms such as a severe headache, numbness, or one-sided weakness, which may be a sign of a stroke needing immediate treatment.

At PYONG Rehabilitation Clinic we have a team of specialist physicians in rehabilitation medicine ready to examine, diagnose, and advise on treatment for pain and problems of the muscles and nervous system, including finger tremor that may relate to muscle tightness or a compressed nerve.

Frequently asked questions (FAQ)

When it comes to finger tremor, many people have questions they would like answered. We have collected the questions most often asked and answered them to help you understand better.

Can finger tremor be cured?

The answer depends on the cause of the symptoms. If it arises from a temporary factor such as stress, caffeine, or a vitamin deficiency, the symptoms usually resolve once the cause is corrected. But if it arises from a disease, such as essential tremor or Parkinson's disease, although it cannot be cured completely, the symptoms can be controlled and improved with medication, physiotherapy, and changes of habit. Appropriate treatment helps the patient to a better quality of life.

Do changes of habit help reduce finger tremor?

Certainly. Changes of habit can help reduce finger tremor in many cases. Reducing caffeine and alcohol, resting enough, managing stress with exercise, meditation, or yoga, and eating well across all the food groups all help reduce the symptoms. In addition, avoiding using the hands for repeated work over long periods, and resting the hands at intervals, helps keep the muscles and nerves working better.

Summary

Finger tremor may arise from many causes, from simple causes you can improve yourself, such as too much caffeine, stress, or a vitamin deficiency, to diseases needing treatment by a doctor, such as essential tremor, Parkinson's disease, or abnormal thyroid function. Observing the character of the symptoms in detail, and recognising the warning signs that need a doctor, helps us look after our health in good time and effectively.

If you have a finger tremor that affects your daily life, or symptoms that worry you, the team of specialist physicians in rehabilitation medicine at PYONG Rehabilitation Clinic is ready to examine, diagnose, and advise on the approach to treatment that suits you. You can contact us at: