Leg Tremors: Causes and Concerns in Neurology - Neurology

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The left leg is shaking?


A month ago, I noticed that my legs started shaking after waking up, which I had never experienced before.
The shaking only occurs when I'm standing.
Previously, I also had headaches and occasional fevers.
I have undergone many tests, all of which came back normal.
Now, I even experience brief pauses while walking.
What could be the reason for this?

bb, 10~19 year old female. Ask Date: 2016/10/19

Dr. Gao Chunde reply Neurology


Walking may also be interrupted; there has been a trend of improvement in just one month.
It is recommended to visit a neurology clinic for a detailed consultation and physical examination to determine whether the issue is due to central nervous system discharges or involuntary movements, and to arrange for further relevant tests for confirmation.

Reply Date: 2016/10/19

More Info


Leg tremors can be a concerning symptom, especially when they appear suddenly and without a clear cause. In your case, the onset of leg tremors after waking up, along with a history of headaches and back discomfort, suggests that there may be several underlying factors at play.
Firstly, it's important to understand that leg tremors can arise from a variety of neurological and non-neurological causes. Neurologically, conditions such as essential tremor, Parkinson's disease, or even anxiety can lead to involuntary shaking of the legs. Essential tremor is a common movement disorder that can affect the hands, head, and legs, and is often exacerbated by stress or fatigue. Parkinson's disease, while typically associated with tremors in the hands, can also manifest as leg tremors, especially in the later stages of the disease.

Another possibility is that the tremors are related to muscle fatigue or overexertion. If you have been more physically active than usual, or if you have been experiencing stress, this could lead to muscle spasms or tremors. Additionally, conditions such as restless leg syndrome (RLS) can cause an uncontrollable urge to move the legs, often accompanied by uncomfortable sensations. RLS typically worsens during periods of inactivity, such as when lying in bed, and can lead to leg movements that may appear as tremors.

The history of headaches and back discomfort you mentioned could also be relevant. Tension headaches, for example, can be associated with muscle tightness in the neck and back, which may contribute to overall discomfort and could potentially lead to muscle spasms or tremors in the legs. If you have been experiencing significant stress or anxiety, this could also manifest physically as tremors.

Given that you have undergone multiple tests that have returned normal results, it may be beneficial to consider non-neurological factors as well. For instance, electrolyte imbalances, dehydration, or even certain medications can lead to muscle tremors. If you are taking any new medications or supplements, it would be wise to review these with your healthcare provider.

In terms of management, it is essential to address any underlying causes. If anxiety or stress is a contributing factor, cognitive behavioral therapy or relaxation techniques may be helpful. Physical therapy can also be beneficial in strengthening the muscles and improving coordination, which may help reduce tremors. If the tremors persist or worsen, a referral to a neurologist may be warranted for further evaluation and potential treatment options.

In conclusion, while leg tremors can be alarming, they can arise from a variety of causes, both neurological and non-neurological. A thorough evaluation by a healthcare professional, including a detailed history and physical examination, is crucial in determining the underlying cause and appropriate management. If you continue to experience these symptoms, I encourage you to follow up with your healthcare provider for further assessment and guidance.

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