10 Fatigue Symptoms

By sarah-jane
Reviewed: dr. stavarache
Article Sources Article Sources
  • 1. 'Fatigue Causes.' Mayo Clinic, 2 Dec. 2020, www.mayoclinic.org/symptoms/fatigue/basics/causes/sym-20050894
  • 2. 'Fatigue.' Better Health Channel, www.betterhealth.vic.gov.au/health/conditionsandtreatments/fatigue
  • 3. Slimani, Maamer, et al. 'The Effect of Mental Fatigue on Cognitive and Aerobic Performance in Adolescent Active Endurance Athletes: Insights from a Randomized Counterbalanced, Cross-Over Trial.' Journal of Clinical Medicine, vol. 7, no. 12, 2018, p. 510, doi:10.3390/jcm7120510
  • 4. 'Muscle Weakness.' Patient Info, 3 Oct. 2016, patient.info/signs-symptoms/tiredness-fatigue/muscle-weakness
  • 5. 'What Type of Headache Do You Have?' Harvard Health, 31 Aug. 2020, www.health.harvard.edu/healthbeat/what-type-of-headache-do-you-have
  • 6. Azzolino, Domenico, et al. 'Nutritional Status as a Mediator of Fatigue and Its Underlying Mechanisms in Older People.' Nutrients, vol. 12, no. 2, Feb. 2020, p. 444, doi:10.3390/nu12020444
  • 7. Nagai, Makie, et al. 'Effects of Fatigue on Immune Function in Nurses Performing Shift Work.' Journal of Occupational Health, vol. 53, no. 5, 2011, pp. 312-319, doi.org/10.1539/joh.10-0072-OA
  • 8. 'Tired Eyes: A Very Real Condition.' Vision Eye Institute, 27 July 2020, visioneyeinstitute.com.au/eyematters/tired-eyes-real-condition
  • 9. Kaur, Jaspreet, et al. 'Effect of Mental Fatigue on Memory and Retention: An Experimental Study.' Journal of Emerging Technologies and Innovative Research, vol. 5, no. 7, 2018, pp. 620-626, www.jetir.org/papers/JETIR1807551.pdf
Medical Expert Medical Expert

Fatigue is an overwhelming lack of energy or exhaustion, and it can include both physical and mental factors. Not the same as simply being sleepy, fatigue affects many people at some point in their lives. The symptoms are wide-ranging, and people experience different symptoms to varying degrees.

There can be many causes of fatigue, including lifestyle, too much or too little exertion, boredom, effects of medication and depression. Sometimes, it can be a result of a more serious condition. People should seek medical advice if they experience unexplained and prolonged periods of fatigue.1‘Fatigue Causes.’ Mayo Clinic, 2 Dec. 2020, www.mayoclinic.org/symptoms/fatigue/basics/causes/sym-20050894


Excessive tiredness can be a symptom of fatigue. Even with adequate sleep, a person may feel exhausted during the day and have difficulty remaining alert. People may also tire easily, feeling drained shortly after the beginning of physical or mental activities. Individuals commonly feel as though they don't have enough energy, and they sometimes lack the energy to perform even basic tasks.

Tiredness due to fatigue can impact a person's day-to-day activities and quality of life. Changing sleep, nutrition and exercise habits can sometimes resolve tiredness associated with fatigue. However, if tiredness persists, medical advice should be sought.2‘Fatigue.’ Better Health Channel, www.betterhealth.vic.gov.au/health/conditionsandtreatments/fatigue


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