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Low blood pressure means your blood pressure numbers are lower than usual. For most people, that’s less than 90 for the top (called systolic) and less than 60 for the bottom (called diastolic).

What’s low for one person might be normal for another. Sometimes, low blood pressure doesn’t cause any problems, but other times, it can make you feel dizzy or even faint. In rare cases, it can be really serious and even life-threatening.

What Is Low Blood Pressure?

When your blood pressure is lower than usual, it’s called hypotension. Blood pressure is shown as two numbers. The top measures pressure when your heart beats, and the bottom measures pressure when your heart rests between beats. Normal blood pressure is usually less than 120/80.

Causes of Hypotension

Low blood pressure happens due to multiple reasons. Some common causes include:

  • Orthostatic Hypotension: Sometimes, when you stand up too quickly, your body can’t send enough blood to your brain fast enough. This is called orthostatic hypotension.
  • Central Nervous System Diseases: Conditions like Parkinson’s disease can interfere with blood pressure control. People with these conditions might feel dizzy after eating because their bodies need more blood to digest food.
  • Low Blood Volume: If you lose much blood from a bad injury or are dehydrated, your blood pressure can drop too low.
  • Life-Threatening Conditions: Serious conditions like irregular heartbeats, blood clots in the lungs, heart attacks, and collapsed lungs can cause really low blood pressure. Allergic reactions or severe infections can also cause it.
  • Heart and Lung Conditions: If your heart or lungs aren’t working properly, your blood pressure can get too low. Heart failure is one reason this might happen.
  • Prescription Medications: Some medicines for high blood pressure, heart problems, or even depression can lower your blood pressure. Please don’t stop taking your meds unless your doctor says it’s okay.
  • Alcohol or Recreational Drugs: Drinking too much alcohol or using certain drugs can make your blood pressure drop. Even herbal remedies can do it, so always tell your doctor about everything you take.
  • Pregnancy: Pregnant women can sometimes get orthostatic hypotension, especially in the first few months. Other complications of pregnancy can cause low blood pressure, too.
  • Extreme Temperatures: Being hot or cold can mess with your blood pressure and make you feel even worse if it’s already low.

What Are the 10 Signs of Low Blood Pressure

Symptoms of hypotension are easy to spot. They include:

  • Nausea
  • Trouble concentrating
  • Fainting
  • Cold, clammy skin
  • Dizziness or lightheadedness
  • Sudden confusion
  • Rapid, shallow breathing
  • Blurry vision
  • Unexplained fatigue
  • Weak but rapid pulse

What To Do If Blood Pressure Is Too Low

To treat low blood pressure, doctors first figure out why it’s happening. If they can fix the problem causing it, like stopping bleeding after an injury, the low blood pressure usually gets better on its own.

If your medications are causing low blood pressure, your doctor might change the dose or have you stop taking them.

If they can’t find the cause, they might still be able to treat the low blood pressure directly. But they can only cure it if they can fix what’s causing it in the first place.

Wrapping Up

Hypotension is very common. However, if you frequently experience the signs of low blood pressure, there must be something your body is trying to notify you about.

Visit our internal medicine expert, Dr. Muhammad Irfan, at the Family Diagnostic Clinic. Our doctor’s clinical interests include diabetes, high blood pressure, and patients with complex, multiple medical problems. Call us at (281) 351-6800 to schedule a visit.

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