Are hypertension and low sodium affecting my seizures?

Question

Hello doctor,

I am a 31-year-old male who has been experiencing seizures since age 19. I am currently taking Sodium valproate 500 mg twice daily, but I still have one to two generalized tonic-clonic seizures every three to four months. My last EEG showed abnormal epileptiform activity in the temporal region, and my brain MRI revealed a small left temporal gliotic scar.

In addition to seizures, I have had high blood pressure for the past three years. My recent blood pressure readings are around 150/92 mmHg, even while taking Amlodipine 5 mg daily. I weigh 181 pounds and am 5 feet 7 inches tall, with a BMI of 28.4.

My latest lab results showed a fasting blood sugar of 118 mg/dL, HbA1c of 6.4 %, and slightly low sodium at 132 mEq/L. Recently, I have also been experiencing frequent headaches, dizziness, and poor sleep.

I am concerned that my high blood pressure and low sodium levels might be worsening my seizures. I am also worried about whether continuing Sodium valproate is safe in my case.

Could you please explain how my seizures and hypertension might be connected?
What treatment adjustments should I consider for better control?

Please help.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I read your query.

Your situation suggests that both your epilepsy and high blood pressure are not fully under control, and yes, these conditions can affect each other. Seizures (sudden bursts of abnormal electrical activity in the brain) are not usually directly caused by high blood pressure.

However, when blood pressure remains elevated, it can worsen headaches, dizziness, and overall brain health, which may lower your seizure threshold (meaning seizures can happen more easily). Poor sleep and stress from uncontrolled blood pressure can also increase seizure frequency.

Your MRI or magnetic resonance imaging showing a temporal gliotic scar (a small area of brain scarring in the temporal lobe) suggests a structural cause for your epilepsy, a long-term brain condition in which a person has repeated, unprovoked seizures. Seizures due to structural changes in the brain are sometimes harder to control with just one medication.

Sodium valproate is generally considered safe for long-term use in men. However, since you are still experiencing seizures every few months, your neurologist may consider adjusting your treatment plan.

This could involve increasing your current dose (if it is safe based on your blood levels and overall health), switching to a different anti-seizure medication, or adding a second medication such as Levetiracetam, Lamotrigine, or Carbamazepine, particularly because temporal lobe seizures sometimes respond better to combination therapy.

Your low sodium level (hyponatremia) is important. Low sodium can trigger or worsen seizures. This is not a common side effect of sodium valproate, but it can happen due to other medications (including some blood pressure drugs), dehydration, or other medical conditions. Your doctor should evaluate this further.

Regarding your blood pressure, amlodipine alone does not appear to be enough. Your doctor may consider adding another medication, such as an ACE (angiotensin-converting enzyme) inhibitor or ARB (angiotensin II receptor blocker), which can help protect your brain and kidneys as well. Sodium levels should be monitored carefully if treatment is adjusted.

In addition, certain lifestyle changes can significantly improve both blood pressure and seizure control. Gradual weight reduction, limiting excess salt intake, maintaining a regular sleep schedule, managing stress effectively, and engaging in regular moderate exercise can all help stabilize blood pressure and reduce seizure triggers, leading to better overall brain and cardiovascular health.

With proper medication adjustments and lifestyle measures, better control of both conditions is very achievable. I strongly recommend close follow-up with both your neurologist and primary care physician to create a coordinated treatment plan tailored to you.

I hope this helps.

Kindly revert so I can assist you further.

Thank you.