Internal tremors are a challenging sensation where an individual feels shaking or vibrations inside their body without any visible outward movement. While not always harmful, these internal sensations can be unsettling and sometimes interfere with daily activities. This phenomenon affects a range of individuals and can stem from various factors.
The Subjective Sensation
Individuals experiencing internal tremors often describe a distinct sensation of an internal “quake” or “vibration” within their body. This feeling is purely internal, meaning it cannot be seen by others, unlike more common external tremors. Descriptions frequently include a buzzing, humming, quivering, or rumbling feeling deep inside, which can occur in various parts of the body such as the trunk, arms, legs, or even internal organs.
These internal vibrations might manifest as a subtle, constant hum or as sporadic, intense bursts. Some people report that the sensation is more noticeable when they are lying down or at rest, creating a disquieting contrast between physical stillness and internal movement. The feeling can be akin to a cell phone vibrating inside the body or like standing next to a running motor, where the vibrations are felt deeply.
Distinguishing Internal from External Tremors
Internal tremors differ significantly from external tremors, which are visible, rhythmic, involuntary movements of a body part. External tremors, such as shaky hands or a trembling head, are observable signs of a neurological condition or other physical factors.
In contrast, internal tremors are entirely a subjective experience felt by the individual. There is no visible shaking or outward sign of movement, making them difficult to explain to others and potentially frustrating for the person experiencing them. While both types of tremors can stem from similar underlying causes, the key distinction lies in the presence or absence of visible physical manifestation.
Common Underlying Factors
Internal tremors can be associated with a variety of conditions and situations, often related to the nervous system. Neurological conditions like Essential Tremor (ET), Parkinson’s disease, and multiple sclerosis (MS) are frequently linked to internal tremors. These conditions affect the brain’s ability to control movement, leading to various tremor types.
Beyond neurological disorders, other factors can also contribute to the sensation of internal tremors. High levels of stress and anxiety are common triggers, as they activate the body’s nervous system and can lead to a “fight or flight” response, causing internal shakiness. Fatigue and insufficient sleep can also make internal tremors more pronounced. Certain medications, including some antidepressants, asthma medications, and even stimulants like caffeine, may induce or worsen tremors. Additionally, withdrawal from substances like alcohol can result in internal tremors as the body adjusts.
When to Consult a Healthcare Professional
While internal tremors are not always indicative of a serious problem, it is advisable to consult a healthcare professional if you experience them. This is particularly important if the tremors are persistent, worsening over time, or significantly impacting your daily life. A medical professional can help determine the underlying cause and provide appropriate guidance.
You should seek medical attention if internal tremors are accompanied by other concerning symptoms. These can include muscle weakness, dizziness, balance issues, difficulty speaking, or other unusual sensations. Keeping a detailed diary of when the tremors occur, what they feel like, how long they last, and any other associated symptoms can be helpful for your doctor in making an accurate diagnosis.