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Published on: 7/15/2026

What medical conditions could cause me to feel light-headed and tired constantly?

Yoshinori Abe

Reviewed by Yoshinori Abe, MD

Internal Medicine

Persistent light-headedness and fatigue are common symptoms that can point to several underlying health conditions. The most frequent causes include:

  • Gastroparesis: A digestive disorder that slows stomach emptying, often leading to dizziness and low energy.
  • Benign Paroxysmal Positional Vertigo (BPPV): An inner ear issue that triggers brief spells of light-headedness with head movement.
  • Non-Alcoholic Fatty Liver Disease (NAFLD): A liver condition linked to fatigue and general weakness.

Other possibilities include anemia, dehydration, low blood sugar, thyroid problems, or medication side effects. Because these symptoms overlap across many conditions, identifying the true cause requires a careful review of your full symptom picture.

The fastest way to narrow down what might be going on is to take a free, instant, AI-powered symptom check. In just a few minutes, you'll receive personalized insights into possible causes and clear guidance on next steps—empowering you to have a more informed conversation with your doctor and take action sooner.

Reviewed for medical accuracy: 07/14/2026

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Explanation

Feeling light-headed and tired constantly can be linked to several medical conditions. Gastroparesis is one condition where the stomach takes too long to empty food. This can make you feel very tired. Another condition is benign paroxysmal positional vertigo (BPPV). BPPV can cause dizziness, and it's common to feel tired when this happens. Lastly, non-alcoholic fatty liver disease (NAFLD) can also make you feel tired. This is when fat builds up in the liver, even if you don't drink much alcohol.

Conditions to Consider:

  1. Gastroparesis: This condition affects how the stomach moves food. When the stomach doesn't work right, you might feel very tired.
  2. BPPV: This is a problem with your inner ear that causes dizziness. Feeling dizzy can make you feel tired more often.
  3. Non-Alcoholic Fatty Liver Disease: This is when fat builds up in the liver. It can make you feel tired because your liver isn't working as well as it should.

If you are experiencing these symptoms, you can use Ubie's free AI symptom checker to help identify potential causes and determine whether you should talk with a healthcare provider for more information and guidance.

(References)

  • Cherian D, Paladugu S, Pathikonda M, & Parkman HP. (2012). Fatigue: a prevalent symptom in gastroparesis. Digestive diseases and sciences, 22669206.

  • Pollak L, & Stryjer R. (2015). Fatigue during an episode of benign paroxysmal positional .... European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 24728232.

  • Newton JL. (2010). Systemic symptoms in non-alcoholic fatty liver disease. Digestive diseases (Basel, Switzerland), 20460914.

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