what is cerebellar atrophy dilantin medication


Dilantin has side effects and toxicity which evidence suggests that Dilantin may cause permanent changes to the brain and skull.

Our firm maintains an extensive national network of highly qualified physicians and scientists who are familiar with the serious side effects of Cerebellar Atrophy.

In qualifying cases, our firm provides referrals to medical experts for analysis of the potential latent effects of the disease.

Causes of Cerebellar Atrophy

Cerebellar Atrophy is a loss of neurons and the connections between them. There is evidence of Phenytoin-induced cerebellar atrophy.

If you are diagnosed with cerebellar atrophy typically you might experience symptoms like unsteady gait, trouble speaking or swallowing, and poor muscle control.

Dilantin toxicity occurs when high levels of Dilantin (phenytoin) build up to harmful levels in the body


Cerebellar Atrophy studies suggest that patients who take Dilantin for long periods of time as a treatment for epilepsy or other seizure disorders may face a significantly increased risk of suffering irreversible deterioration of the cerebellum.


Dilantin brain degeneration is a serious concern for epilepsy patients with reports of cerebellar atrophy development in some patients. Cases of Dilantin brain degeneration show Dilantin may potentially induce permanent issues with speech and movement, as Dilantin toxicity has occured.

Causes Cerebellar Atrophy?

Cerebellar Atrophy Seizure Dilantin Can Accumulate Phenytoin Cerebellar Atrophy   Long-term use of Dilantin may trigger skull thickening and the brain shrinking leading to complications. Cerebral atrophy symptoms may come on slowly or rapidly.  
  Cerebellar Atrophy Epilepsy Cerebellar Atrophy Causes Cerebellar Atrophy Volume Loss


Dilantin® Cerebellar Atrophy Article
Cerebral atrophy (atrophy of the brain) occurs when brain tissue degenerates and loses neurons and the connections between them. Atrophy can be generalized, which means the entire brain has shrunk; or it can be focal, affecting only a certain area of the brain and decreasing the functions that area of the brain controls. BrainFacts.org

Cerebellar atrophy is a focal cerebral atrophy marked by a degeneration of the cerebellum, which is the part of the brain that sits under the cerebrum, behind the brain stem. It is divided into two hemispheres. The cerebellum helps regulate voluntary movements such as posture, balance, coordination and speech. It's what allows for smooth, balanced and precise movement.

Damage to the cerebellum results in a lack of balance, slow movements, tremors, which causes shaking, and unstable eye movements. It can make certain physical tasks difficult and unsteady. The symptoms of cerebellar atrophy are similar to a stroke.

Symptoms of cerebellar degeneration include:

  • Unsteady, lurching walk, which often includes a back and forth tremor in the main part of the body.

  • Slow, unsteady, jerky movements in the arms or legs
  • Slow and slurred speech

  • Nystagmus: small rapid movements in the eyes.
Cerebellar Degeneration Causes

Conditions that can lead to cerebellar degeneration include seizures, and other cerebellar disorders. Cerebellar degeneration has also been linked to toxins in the brain from ethanol, chemotherapy treatments and phenytoin.

According to Dilantin research on the link between cerebellar atrophy and Dilantin side effects, cerebellar atrophy tends to show up in patients after long-term use of phenytoin and when drug serum levels are above the therapeutic range. However, cerebellar atrophy has also reportedly occurred when the drug level appeared to be in the normal range.

Several cerebral atrophy studies have shown that cerebellar toxicity caused by long-term use of phenytoin can cause cerebellar atrophy.

A study published in 2003 found that moderate to severe atrophy was linked to long term use of Dilantin.

Cerebral Atrophy studies have also found that cerebellar atrophy can also affect children who take phenytoin sodium to treat their epilepsy.

Since seizures can also cause cerebral atrophy, a 1994 study took this fact into account because patients taking phenytoin typically suffer from seizures. That study, which was the first to look at the connection, found that patients exposed to phenytoin as a group had significantly smaller cerebelli compared to non-exposed patients.

Cerebellar Atrophy Treatment

Recovery from cerebral atrophy and localized cerebellar atrophy is reportedly possible when patients stop taking Dilantin. Withdrawal from phenytoin is monitored by a doctor.

However, in some cases when there is chronic treatment with phenytoin or acute toxicity caused by Dilantin that led to cerebral atrophy, some of the injuries were permanent, specifically the cerebellar ataxia, which is the lack of muscle coordination.

Free Phenytoin Lawsuit/Dilantin Lawsuit Review

Did you or a loved one suffer cerebellar atrophy, a localized atrophy of the brain, after taking phenytoin, generic Dilantin? Our scientific evidence concerning Phenytoin lawsuit / Dilantin lawsuit could help prove your injuries.

Detailed View: Safety Labeling Changes Approved By FDA Center for Drug Evaluation and Research (CDER)

June 2016

Summary View


  • Serum levels of phenytoin sustained above the optimal range may produce confusional states referred to as "delirium," "psychosis," or "encephalopathy," or rarely irreversible cerebellar dysfunction and/or cerebellar atrophy. (addition of cerebellar atrophy).


  • Nervous System: Cerebellar atrophy has been reported, and appears more likely in settings of elevated phenytoin levels and/or long-term phenytoin use. (addition to first paragraph)

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