You may experience a twitching lip if you’ve had too much caffeine or from other causes that may resolve on their own. However, lip twitching can also occur in more serious health conditions, such as ALS.

Lip twitching, when your lip shakes or trembles involuntarily, may result from muscle spasms associated with drinking too much coffee or a potassium deficiency.

However, a twitching lip can potentially indicate a serious medical issue, such as a parathyroid condition or brain disorder. In these instances, early detection can help provide the most effective treatment.

This article will cover possible causes of lip twitching, additional symptoms you may have, and when to get medical attention.

Caffeine is a stimulant and could cause your lip twitching if you drink it in excess. The technical term for this condition is caffeine intoxication.

You might have this condition if you drink more than three cups of coffee per day and experience at least five of the following symptoms:

If you reduce or eliminate your caffeine intake, your symptoms should resolve. If they don’t, there may be another underlying cause.

Muscle twitching, or fasciculation, and extrapyramidal symptoms, also called drug-induced movement disorders, are known side effects of many prescription and over-the-counter (OTC) drugs.

Some medications that may cause them include:

To manage medication-induced muscle twitching, you can talk with a doctor about switching medications.

However, do not stop taking a prescribed medication without first talking with the prescribing doctor. Some medications can cause severe side effects if stopped suddenly.

If you have low potassium levels, you might experience lip twitching. Potassium is an electrolyte that helps carry nerve signals in the body.

Potassium deficiencies can negatively affect the muscles and cause spasms and cramps. Treatment for potassium deficiency includes adding potassium-rich foods to the diet and avoiding medications that could affect your potassium levels.

Foods high in potassium can include:

  • bananas
  • avocado
  • coconut water

Peripheral neuropathy can happen if you have significant nerve damage. It can cause twitching, spasms, and numbness, among other symptoms.

Neuropathy can result from various health conditions, including:

Treatment can depend on the underlying cause of peripheral neuropathy.

People with Bell’s palsy experience temporary paralysis on one side of the face.

Each person is different, but in some instances, Bell’s palsy makes it difficult to move the nose, mouth, or eyelids. In other cases, Bell’s palsy can cause twitching and weakness on one side of the face.

Researchers believe Bell’s palsy and certain infections may be linked. These can include:

It may also reactivate in response to triggers like sleep deprivation or stress.

Treating Bell’s palsy depends on your symptoms but may involve corticosteroids and physical therapy.

Hemifacial spasms, also known as tic convulsif, are muscle spasms that occur on one side of the face.

Hemifacial spasms occur because of damage to the seventh cranial nerve, which affects the facial muscles. The damage may result from nerve damage from another health condition or a blood vessel pressing on the nerve.

Doctors typically diagnose hemifacial spasms using imaging tests such as:

Treatment may include Botox injections, which need to be repeated every 6 months to remain effective. The medication partially paralyzes the muscle to stop the twitching.

A surgery called microvascular decompression is also an effective long-term treatment that removes the vessel causing the tics.

A focal onset, or partial, seizure can cause muscle contractions, including lip twitches or uncontrollable biting. People may be aware, unaware, or lose consciousness during the seizure.

Seizures can result from multiple health conditions, including:

Treating a seizure can depend on the underlying cause.

For people with seizure disorders, such as epilepsy, doctors may recommend taking anti-seizure medication to reduce the risk of seizures and avoiding possible triggers, such as:

  • sleep deprivation
  • alcohol consumption
  • exposure to flashing lights

Tourette syndrome is a disorder that causes you to involuntarily make sounds or movements repetitively. Tourette syndrome can involve motor and speech tics. While potentially uncomfortable, they’re not physically painful or life threatening.

Doctors don’t know what causes Tourette syndrome, although it’s believed to be hereditary, and there’s no cure for the disorder.

Treatments include therapy and medication. Doctors may also recommend Botox for motor tics such as lip twitching.

Parkinson’s disease is a neurodegenerative disorder, which means it can progress over time. It can cause:

Early symptoms typically include slight tremors of the:

  • lower lip
  • chin
  • hands
  • leg

It develops as nerve cells in the brain responsible for producing the chemical dopamine die. Researchers do not fully understand what causes Parkinson’s in some people but not others with similar risk factors.

Common treatments include medication to replenish dopamine or stimulate dopamine activity in the brain. Doctors may recommend other medications to treat specific symptoms, such as anticonvulsant medications or beta-blockers for tremors.

Amyotrophic lateral sclerosis (ALS), also known as Lou Gehrig’s disease, is a neurogenerative disease that affects the nerves and spinal cord. It causes a loss of muscle control that worsens over time.

Early symptoms can include:

No treatment can cure or restore nerve function lost due to ALS. However, some medications may help slow the progression of the disease. These include riluzole (Rilutek) and edaravone (Radicava). Doctors may also recommend rehabilitation and other forms of therapy.

People with DiGeorge syndrome are missing part of chromosome 22, which causes several body systems to develop poorly. DiGeorge is sometimes called 22q11.2 deletion syndrome.

DiGeorge syndrome can cause:

DiGeorge syndrome is typically diagnosed at birth. While there’s no way to prevent or cure the disorder, doctors may recommend treatment options to manage each symptom individually.

Hypoparathyroidism is a condition in which the parathyroid glands produce very low levels of parathyroid hormone, which can, in turn, cause low calcium and high phosphorus levels in the body.

Hypoparathyroidism can cause twitching around the mouth, throat, and hands.

Treatment options may include:

If your lip twitching occurs regularly, doesn’t stop, or is accompanied by other concerning symptoms, you may need medical attention.

Lip twitching can be an early indicator of a more serious health condition, such as Parkinson’s disease or ALS.

Lip twitching is a motor symptom, so it’s easy for doctors to see the tremors you’re experiencing.

A physical exam to evaluate other symptoms may be one way for your doctor to diagnose what’s causing the twitches. A doctor may also ask about your lifestyle, such as how frequently you drink coffee or alcohol.

If no other symptoms are visible, a doctor may need to run some tests to determine a diagnosis. These can include:

Because there are several potential causes of lip tremors, multiple treatment methods exist.

For some people, the easiest way to stop lip twitching is to eat more bananas or other foods high in potassium. For others, getting Botox injections is the best way to prevent the tremors.

Talk with your healthcare professional about what’s causing lip twitching and the best way to stop this symptom.

If you haven’t seen a healthcare professional yet, you may want to try:

  • reducing your daily coffee intake to less than three cups, or cut out caffeine altogether
  • reducing or cutting out alcohol consumption altogether
  • eating more foods high in potassium, such as broccoli, spinach, bananas, and avocado
  • applying pressure to your lips using your fingers and a warm cloth

Although often harmless, lip twitching can potentially indicate a more serious medical problem. If drinking less coffee or consuming more potassium doesn’t help, it may be time to talk with a doctor.

If a more serious disorder is causing your lip twitching, early detection is key. In such cases, treatment methods are often available to slow the onset of more serious symptoms.