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The 10 Most Common Types of Tremors (With Symptoms of Each)

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A tremor involves involuntary and uncontrolled muscle oscillations in one or more parts of the body—most typically the hands, arms, head, face, voice, abdomen, or legs.

Tremors can be the result of:

  • Neurological disorders—such as multiple sclerosis, stroke, or a traumatic brain injury, which affect parts of the brain that controls muscles throughout the body.
  • Neurodegenerative diseases—which damage or destroy parts of the brainstem.
  • Alcohol or drug abuse.
  • Or the side effect of medications.

Even though tremors aren’t life-threatening, they are embarrassing and encumbering when it comes to daily tasks. And because there are so many types of tremor, it’s often difficult to differentiate one from another. Here are the ten most common types of tremors and qualifying symptoms for each…

1. Essential Tremor

Essential tremor is the most common form of tremor, affecting the cerebellum or thalamus portion of the brain. Essential tremors develop gradually, most often beginning in middle-age or later, and affecting the hands, making it difficult to grasp or hold onto objects. Essential tremors are brought on and aggravated by emotional or physical stress, and fatigue. Some studies link this tremor to heredity, however, there is no conclusive evidence that they are passed down by family members.

2. Parkinsonian Tremor

In spite of the name, Parkinsonian tremors don’t only impact patients with Parkinson’s disease. In fact, this form of tremor can wreak havoc on drug users, those with infections, and those with other neurodegenerative disorders. This tremor causing the hands to move uncontrollably in a motion referred to as “pill-rolling” (because it resembles a pill being rolled between the thumbs and fingers) and “rolls” from one side of the body to the other. Similar to other tremors, Parkinsonian tremors are often provoked by stress.

3. Physiologic Tremor

It may shock you to realize that you’ve suffered a physiologic tremor! This common tremor is motivated by too much caffeine, stress, low blood sugar, or alcohol withdrawal (hangover) even though it’s barely noticeable. It affects the hands momentarily—typically when the fingers are fully extended and disappears when the underlying cause (i.e., you eat or distress) is eliminated.

4. Dystonic Tremor

A Dystonic tremor causes the muscles to contract suddenly so the body distorts painfully. This type of tremor most often affects the posture by attempting to correct the deviant muscle contraction, which only worsens the tremor. Typically only rest, regular injections of attenuated botulinum toxin, or medications (i.e., anticholinergic drugs) help ease the muscle contractions.

5. Psychogenic Tremor

Psychogenic tremors are often difficult to differentiate from other forms of tremor. That’s why diagnosis is primarily excluding other types. Telling symptoms of psychogenic tremors include onset in stressful situations, and then unexplained muscle contractions affecting various body parts suddenly easing when the patient’s attention is diverted elsewhere.

6. Orthostatic Tremor

Orthostatic tremors are typically brought on by standing, which causes uncontrolled muscle contractions in the legs and the abdomen. An orthostatic tremor is typically distinguished by this sudden unsteadiness that occurs soon after standing up. And it subsides as soon as the individuals return to a seated position.

7. Cerebellar Tremor

The Cerebellar tremor is a tremor that’s caused by damage to the cerebellum pathways. It most typically occurs with intention, which implies that it is brought on when coordination is called upon to—for instance, grasp an object, push a button, or steady the hand for any reason. The tremor intensifies when the hand or finger is just about to meet its objective (i.e., another hand, object, or button).

8. Rubral Tremor

Rubral tremors are severely slow and impactful as they affect the body in all directions with sudden and uncontrolled muscle contractions, where the entire body becomes rigid and the posture contorted. Luckily, they are one of the more rare forms of tremor, and commonly occur following a stroke, due to the fact that no simple treatment, rehabilitation, or medication can ease or prevent them.

9. Intention Tremor

Intention tremor, as its name suggests, results when muscle contraction amplify and the tremor increases as the individual enacts a deliberate and visually guided movement. As the individual moves with “intention” the tremor occurs vertically and in the direction of movement and the object of aim is overshoot.  Intention tremors are the outcome of dysfunction of damage to the cerebellum or its pathways (i.e., a lesion, multiple sclerosis, or other degenerative or metabolic disorders).

10. Palatal Tremor

Palatal tremors occur in the soft palate or cranial musculature, typically due to lesions or damage in the brainstem (i.e., due to a hemorrhage or trauma to the area). When a Palatal tremor occurs, the facial and mouth muscles contract rhythmically and involuntary, and the soft palate muscles produce a distressing clicking sound.

 


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