What are internal tremors?
Internal tremors, or internal vibrations, are involuntary, rhythmic muscle contractions that are felt inside the body but are not visible externally. While most people associate tremors with visible shaking of the hands or head, internal tremors cause a similar quivering, buzzing, or vibrating sensation deep within the torso, limbs, or head. This is often what leads individuals to describe the feeling as if their "organs are shivering."
This sensation arises from a disruption in the nerves that control muscle movement. The exact mechanism can vary depending on the cause, but it typically involves miscommunication between the brain and the body's nerves. The feeling can be constant, intermittent, or triggered by specific situations like stress or fatigue.
The neurological basis
Our nervous system is a complex network responsible for all bodily functions, including muscle control. Tremors, both internal and external, are rooted in neurological issues that interfere with this communication. The basal ganglia, located deep within the brain, plays a critical role in regulating voluntary movement. Damage or dysfunction in this area, which occurs in diseases like Parkinson's, can lead to tremors. Similarly, demyelination of nerves, a hallmark of Multiple Sclerosis (MS), can disrupt nerve signals and result in tremors and other sensory disturbances.
Common causes for feeling like your organs are shivering
Numerous factors can contribute to this unsettling sensation. It's important to recognize that what feels like a shiver in your organs could be a symptom of a wide range of conditions, some minor and others more serious.
Neurological conditions
- Essential Tremor (ET): This is the most common type of movement disorder and can cause both external and internal tremors. It often worsens with movement or stress.
- Parkinson's Disease (PD): While known for visible external tremors, many people with PD also experience bothersome internal tremors, sometimes years before other symptoms become apparent.
- Multiple Sclerosis (MS): Damage to the myelin sheath covering nerve fibers can cause a variety of symptoms, including internal vibrations.
Anxiety and stress
High levels of anxiety and stress trigger a fight-or-flight response, flooding the body with stress hormones like cortisol and adrenaline. This can put the nervous system into a state of hyper-arousal, leading to muscle tension, rapid heart rate, and internal shaking. This is a very common cause, and many people report that their internal tremors are most noticeable during periods of high stress.
Medication side effects
Certain medications can cause internal tremors as a side effect. Some examples include certain antidepressants, asthma medications, and drugs used to treat high blood pressure. Stopping or changing medication should only be done under the supervision of a healthcare provider.
Vitamin deficiencies and electrolyte imbalances
Deficiencies in certain vitamins, such as Vitamin B12, or imbalances in electrolytes like magnesium, can affect nerve function and lead to internal shaking or other muscle and nerve symptoms. Correcting these deficiencies, under medical guidance, can help alleviate symptoms.
Other contributing factors
- Fatigue: Physical and mental exhaustion can put a strain on the nervous system, exacerbating or triggering internal tremors.
- High Caffeine Intake: As a stimulant, caffeine can overexcite the nervous system, leading to heightened anxiety and internal vibrations. Reducing or eliminating caffeine can sometimes help.
- Chronic Fatigue Syndrome: This condition, characterized by extreme tiredness, can be associated with a host of other symptoms, including internal tremors.
- Long COVID: A growing body of research shows that many people experiencing long-term effects of COVID-19 report internal tremors and other neurological symptoms.
Internal Tremor vs. External Tremor: A Comparison
| Feature | Internal Tremor | External Tremor |
|---|---|---|
| Detection | Only felt by the individual; not visible to others. | Visible shaking of limbs, head, or voice. |
| Cause | Primarily neurological, anxiety, or systemic issues. | Often neurological, can be caused by external factors like cold or fear. |
| Experience | A buzzing, shivering, or vibrating sensation inside the body. | Visible, rhythmic shaking or trembling. |
| Associated Conditions | Parkinson's, MS, Essential Tremor, Anxiety, Long COVID. | Parkinson's, Essential Tremor, Hyperthyroidism, some medications. |
What to do if you feel your organs are shivering
If you're experiencing internal tremors, it's essential to approach the situation calmly but seriously. The sensation itself is not dangerous, but it can be a signal from your body that something is out of balance. Here are some steps to take:
- Document your symptoms: Keep a journal noting when the tremors occur, what you were doing, your stress levels, and if they are associated with any other symptoms like dizziness, fatigue, or changes in mood.
- Consult a healthcare professional: This is the most critical step. A doctor can help differentiate between benign causes and more serious underlying conditions. Be prepared to discuss your symptoms openly and honestly.
- Manage stress and anxiety: If stress is a trigger, incorporating stress-management techniques can be very effective. This can include meditation, deep breathing exercises, and mindfulness.
- Review your diet: Consider your caffeine and stimulant intake. Ensure you have a balanced diet to support nervous system health.
- Prioritize sleep: Lack of sleep can intensify internal tremors. Establishing a regular sleep schedule and practicing good sleep hygiene can make a significant difference.
For more in-depth information on tremors, you may find resources from authoritative health organizations helpful, such as this guide from an authoritative source on tremors.
Conclusion
Feeling like your organs are shivering is a very real and often distressing experience that is commonly described as an internal tremor. While anxiety and stress are frequent culprits, it's crucial not to dismiss the symptom, as it can be an early indicator of a neurological condition like Parkinson's or Multiple Sclerosis. The key to managing this unsettling sensation is an accurate diagnosis from a healthcare professional, followed by appropriate treatment and lifestyle adjustments. By tracking your symptoms and openly communicating with your doctor, you can work toward understanding and alleviating the cause of your internal vibrations.
