How Do You Know If You're Too Tired?

Reviewed on 4/21/2022
A doctor leaning on his hand at a desk and looking fatigued
When you are feeling so tired that it is overwhelming and not relieved with rest (also called fatigue or exhaustion), you should see a doctor, especially if it is accompanied by other symptoms.

Feeling tired all the time is called fatigue or exhaustion, which is when tiredness is overwhelming and is not relieved with rest. Tiredness is usually able to be alleviated with rest. 

Talk to your doctor if you are feeling tired with low energy and: 

  • Symptoms have persisted for several weeks 
  • Sleep does not alleviate the symptoms
  • Excessive tiredness is a new symptom 
  • You are feeling depressed or anxious

See a doctor immediately if you have fatigue and:

  • A profound change in the ability to do what you used to do 
  • Chest pain
  • Shortness of breath
  • Irregular heart rate
  • Feeling as if you will pass out
  • Suicidal or homicidal thoughts
    • If you or someone you know is in crisis, call the toll-free National Suicide Prevention Lifeline at 1-800-273-TALK (8255), available 24 hours a day, 7 days a week. The service is available to anyone. All calls are confidential.

Treatment for feeling too tired will depend on the cause.

What Are Symptoms of Feeling Too Tired?

In addition to feeling tired all the time, fatigue and exhaustion can cause physical, mental and emotional signs and symptoms such as:

  • Headache
  • Dizziness
  • Muscle aches or soreness
  • Muscle weakness
  • Slowed reflexes and responses
  • Impaired decision-making and judgment
  • Moodiness
  • Irritability
  • Problems with hand-eye coordination
  • Loss of appetite
  • Reduced immune system function
  • Blurred vision
  • Short-term memory problems
  • Difficulty concentrating
  • Decreased attention 
  • Reduced motivation
  • Hallucinations

Why Am I Always Tired?

There are numerous causes for feeling too tired, including: 

Reviewed on 4/21/2022
Image Source: iStock Images