Muscle twitching in leg: causes muscle twitching in legs

Muscle twitches are caused by your muscles contracting involuntarily. So you have no control over it. Muscle twitches or twitches can occur for many reasons, such as stress, too much caffeine, a poor diet, exercise, or as a side effect of some medications. Many people experience twitching in their eyelid, thumb or calf muscles. These types of shocks usually disappear after a few days. They are often related to stress or anxiety. Although most twitches go away within a few days and are nothing to worry about, some twitches can be caused by nerve problems or other medical conditions.

  • Muscle twitching
  • Causes of muscle twitching in leg
  • Muscle tremors in legs due to underlying conditions
  • Amyotrophic lateral sclerosis (ALS)
  • Muscular dystrophy
  • Fibromyalgia
  • Muscle twitching often harmless
  • When to call a doctor


Muscle twitching

Muscle twitching is a symptom in which a single muscle or muscle group served by a single nerve contracts involuntarily. In many cases, muscle tremors can go unnoticed or be nothing more than a trivial and temporary annoyance. It is usually a very benign symptom that goes away on its own and can be caused by everyday things like exercise or too much caffeine. In some cases, uncontrollable muscle twitching (at rest) can be caused by a serious condition.Muscle twitching due to certain medications / Source: Stevepb, Pixabay

Causes of muscle twitching in leg

Muscle twitches in your leg are usually nothing to worry about. Many people sometimes experience muscle twitches in the leg or elsewhere in the body. They are associated with:

  • stress and anxiety
  • intensive exercise or strenuous physical exertion
  • fatigue and exhaustion
  • drinking too much caffeine or alcohol
  • some medicines (as a side effect)

Muscle twitches can occur in any part of the body, but twitches or twitches in the eyes or legs are especially common. You may also experience tingling or cramps (spasms) in the same area.

Muscle tremors in legs due to underlying conditions

Amyotrophic lateral sclerosis (ALS)

Amyotrophic lateral sclerosis (ALS) is a condition that affects the nervous system. It is a serious condition that causes the nerve cells in the brain and spinal cord to wither and die, ultimately leading to disability and death of the patient. ALS is a rare condition. The exact cause of ALS is not yet known in 2023. This disease gradually affects more and more muscles, with the exception of the heart muscle. The disease usually starts with muscle twitching and muscle weakness and this worsens and eventually you are no longer able to move his arms or legs. Eventually, the muscles responsible for breathing stop working and you can no longer breathe without outside help.

Muscular dystrophy

Muscular dystrophy is a term that covers a group of diseases that cause a loss of muscle tissue. Since there are different types of muscular dystrophy, the disease can affect you in different ways. This varies from person to person. It usually causes muscle weakness, twitching, and loss of muscle tissue in one muscle group or throughout the body. Muscular dystrophy can occur in adults, but the more severe forms usually occur in children. There is no cure for any form of muscular dystrophy and treatment focuses on controlling the symptoms.The 18 symmetrical pressure points or tender points / Source: Sav vas, Wikimedia Commons (CC0)


Fibromyalgia is a syndrome that is not yet well understood by doctors in 2023. It causes widespread pain throughout the body and multiple tender points in different muscles. Those who suffer from fibromyalgia also have difficulty sleeping, are depressed, suffer from severe fatigue and many other symptoms. Muscle twitching and muscle weakness are common problems in fibromyalgia patients. Fibromyalgia patients may also experience muscle twitching.

Muscle twitching often harmless

Most muscle twitches are benign and do not indicate an underlying condition or disorder. It is often caused by stress or a lack of sleep, caffeine, too much exercise and magnesium deficiency. Muscle twitching is not a major problem, it is at most a nuisance. Almost everyone experiences it and it is completely harmless in itself.

When to call a doctor

Contact your doctor in the following cases:

  • you have a nervous twitch or muscle twitch that doesn’t go away
  • you notice weakness, tingling, or numbness in the area where you get muscle twitches
  • it appears that the muscle becomes smaller and decreases in size


read more

  • Knee twitching: causes of muscle twitching in knee
  • Muscle twitching: causes and treatment of twitching muscles
  • Muscle cramps: cramps in hands, arms, legs, calves and back
  • Twitching toe: causes & treatment of twitching toes