When one or both of your legs shake, it is typically referred to as a tremor. This is an involuntary muscle contraction, meaning you are not in control of the leg movement.
Leg tremors may happen for many reasons and are not always a cause for concern. However, there are some conditions that cause leg shaking and may warrant a visit with your healthcare provider. Read on to learn more about what may be causing your legs to shake.

What’s a Tremor?

Tremors are an involuntary movement that occur in predictable patterns. If you have a leg tremor, you will notice pulses or spasms in the muscle that typically last only a few minutes. In some cases, the tremors become chronic, which can indicate an underlying health issue.
Read more at: https://www.verywellhealth.com/leg-shaking-tremor-types-causes-and-more-5215449