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Can Dehydration Cause Dizziness That Comes and Goes?

Feeling dizzy on and off throughout the day can be frustrating, and even a little alarming when you’re not sure what’s causing it. One of the most common, yet often overlooked, triggers is dehydration. Even mild fluid loss can affect your circulation, blood pressure, and electrolyte balance, leading to waves of lightheadedness or dizziness that seem to appear and disappear without warning. In this blog, we’ll break down why dehydration can cause intermittent dizziness and what you can do about it.

At AFC Urgent Care Denver City Park, we offer walk-in medical evaluations and IV hydration therapy to help you recover quickly when dehydration is at play. Our center is conveniently located at 2848 Colorado Blvd. in Denver, CO. Walk-in or plan your visit in advance below!

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How Dehydration Affects Your Body

Your body relies on adequate fluids to maintain normal blood pressure, support circulation, and keep electrolytes stable. When you become dehydrated, whether from not drinking enough water, sweating heavily, or losing fluids through illness, your blood volume decreases. This makes it harder for your body to push oxygen-rich blood to your brain.

As a result, you may experience:

  • Lightheadedness or dizziness 
  • Fatigue 
  • Dry mouth 
  • Headaches 
  • Rapid heartbeat 
  • Feeling faint when standing up

Because your hydration levels can fluctuate throughout the day based on activity, temperature, and fluid intake, dizziness from dehydration may come and go.

Why Dehydration-Related Dizziness Can Fluctuate

Most people assume that if dehydration is the cause, dizziness would be constant. But that’s not always the case. Here’s why it may happen intermittently:

1. Positional Changes: When you stand up quickly, your body needs enough blood volume to stabilize your blood pressure. With dehydration, this response is weaker, causing episodes of dizziness that pass after a few seconds.

2. Temporary Drops in Blood Pressure: If you’re dehydrated, even small movements or mild exertion, like walking up the stairs or being in a warm room, can trigger momentary dizziness.

3. Inconsistent Fluid Intake: If you drink small amounts of water throughout the day but not enough to fully replace lost fluids, your hydration level can dip and recover slightly, creating waves of symptoms.

4. Electrolyte Imbalance: Losing sodium, potassium, or magnesium through sweat or illness can interfere with nerve and muscle function, leading to dizziness that fluctuates depending on activity.

How To Know If Dehydration Is The Cause

While dehydration is a frequent culprit, dizziness can also be caused by other conditions, some more serious than others. You may be dealing with dehydration if your dizziness is accompanied by:

  • Increased thirst 
  • Dark yellow or low urine output 
  • Dry lips or skin 
  • Fatigue or sluggishness 
  • Recent illness, heat exposure, or strenuous activity

If you’re unsure, it’s always better to have a medical provider evaluate your symptoms.

How Urgent Care Can Help 

At AFC Urgent Care Denver City Park, we provide prompt evaluation and personalized hydration treatment. For mild dehydration, oral fluids may be enough. But for moderate or severe dehydration, or when dizziness is interfering with your ability to function, IV hydration therapy can be extremely effective. IV hydration delivers fluids and electrolytes directly into your bloodstream for rapid relief. Many patients begin feeling better within minutes as their circulation and electrolyte balance are restored.

You should visit urgent care right away if you experience:

  • Persistent or worsening dizziness 
  • Heart palpitations 
  • Signs of heat exhaustion 
  • Vomiting or diarrhea that makes it difficult to stay hydrated 
  • Dizziness that interferes with daily activities

Get Same-Day Dehydration Treatment & IV Fluids in Denver, CO at AFC Urgent Care Denver City Park

To prevent dizziness linked to dehydration, aim to drink water consistently throughout the day, especially during exercise or illness. Eating water-rich foods like fruits and vegetables and maintaining a balance of electrolytes can also support healthy hydration. If dizziness continues even after increasing your fluid intake, come visit the walk-in clinic at AFC Urgent Care Denver City Park. Our medical team is here to help diagnose the cause and provide effective treatment. No appointment is necessary– just walk in and take charge of your health today! We accept most health insurance plans and provide cost-effective options for self-paying patients. If you have any additional questions about the IV hydration services we provide, please call us directly at (303) 381-1100.

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