Why Do I Sometimes Feel an Internal Shakiness or Tremor, and Is It Perimenopause-Related Anxiety?

Have you ever been sitting perfectly still, maybe reading a book or watching TV, and felt a strange buzzing or vibration deep inside your body? It's not a visible shake. No one else can see it. But you can feel it clear as day.

This feeling of an internal tremor during perimenopause is a real, and frankly, unsettling experience many women report. While direct research is still catching up, it’s theorized to be a physical symptom of anxiety and a dysregulated nervous system, triggered by the hormonal roller coaster of this life stage—specifically, fluctuating estrogen and cortisol levels.

What Exactly Is an Internal Tremor?

First things first: you're not imagining it. That feeling of being shaky on the inside is a real physiological sensation. Clinically, it's described as a subjective feeling of vibration inside your body, most often in your torso, arms, or legs, but without any actual, visible shaking that someone else could see or measure (Characterisation of internal tremors and vibration symptoms, 2023). It can feel like a phone vibrating in your pocket, except the phone is inside your chest. It’s a bizarre symptom, and one that can easily make you feel like you’re losing your mind.

And honestly? It’s frustrating. Because it’s so frequently reported by women going through this transition, yet there's a serious lack of specific scientific studies directly investigating the link between an internal tremor perimenopause and hormonal changes (Internal tremors and menopause: what you need to know, 2024). So we're left to connect the dots ourselves, based on what we know about how our hormones impact our brains and bodies.

Why Is an Internal Tremor Perimenopause Symptom So Common?

The leading idea points directly to your nervous system getting put through the wringer. Researchers now recognize perimenopause as a significant "neurological transition state" (Perimenopause as a neurological transition state, 2023). That’s a scientific way of saying your brain is undergoing a major rewiring project, and the construction noise can get pretty loud. As estrogen levels fluctuate and decline, they disrupt the chemical messengers in your brain—the neurotransmitters—that help keep everything running smoothly.

This hormonal chaos can also dysregulate your body's main stress hormone, cortisol. The result? Your central nervous system can get stuck in "on" mode, triggering a low-grade 'fight or flight' response that never quite shuts off (Internal tremors and menopause: what you need to know, 2024). This constant state of high alert is believed to be what creates the physical sensation of an internal tremor during perimenopause. Your body is basically humming with a nervous energy it can't discharge. It's a similar mechanism behind other physical symptoms like nighttime muscle twitches or even suddenly clenching your jaw while you sleep.

Is It Anxiety, or an Internal Tremor Perimenopause Symptom?

This is the chicken-or-the-egg question, isn't it? The answer is likely… both. We know that anxiety is a common symptom of perimenopause, and it often shows up in very physical ways, including feelings of anxiety and inner shakiness (Perimenopause and Anxiety, 2024). So, the hormonal shifts can directly trigger anxiety, which in turn causes the internal tremor. It’s a classic physical manifestation of an anxious state.

But it can also work the other way. You might be feeling completely calm mentally, and then suddenly feel that internal buzzing start up. That sensation alone is enough to *cause* anxiety. Who wouldn't be worried by a mysterious internal vibration? Either way, the root cause appears to be the same: a nervous system that's been overstimulated by hormonal fluctuations. Whether you call it anxiety or an internal tremor perimenopause symptom, it points to a system that needs help finding its calm, which is where ingredients designed to support adrenal health and nervous system regulation, like those in GloSerene, can make a difference.

What This Means for You

Here’s the bottom line. That internal shakiness is real, it’s unnerving, and you are not alone in feeling it. Knowing that it’s likely tied to your nervous system being on overdrive is the first step. It's not some vague, unsolvable mystery. It’s a physiological response to a major biological transition.

But—and this is not negotiable—you must talk to your doctor about this. An internal tremor can also be a symptom of other serious health conditions, like thyroid problems, Parkinson's disease, or multiple sclerosis. You cannot assume it's just an internal tremor perimenopause issue. A proper medical evaluation is the only way to rule out other causes and get peace of mind. Be your own advocate in the doctor's office. Describe what you're feeling, how often it happens, and ask for a thorough check-up. Understanding the potential 'why' helps you ask better questions and finally get the support you need.

Written by Emma | Last Updated: 2027-06-11

This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.