Lethargic
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People with these symptoms also use Ubie's symptom checker to find possible causes
Feel uncomfortable
Muscles become tired when I do repetitive things like brushing teeth or combing hair
Suddenly feeling tired or fatigued in the middle of the day, then it gets better
Feeling more tired/fatigued in the morning than at other times of the day
Feeling very tired in the morning even though I slept well
Muscles don't work well in the evening
A tendency to lose strength
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Developed by doctors.
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Content updated on Sep 6, 2022
About the symptom
It describes an overall feeling of tiredness or lack of energy. People who have fatigue feel so drained that their exhaustion interrupts their daily life.
When to see a doctor
Seek professional care if you experience any of the following symptoms
Difficulty breathing / breathlessness
Recent weight loss
Unexplained weight loss of 5% or more in 1 month
Jaundice
Seizure attack
Melena (black stools)
Peripheral cyanosis
Possible causes
- Diabetes mellitus (DM)
A disease where blood sugar levels are abnormally high, due to problems with insulin production or resistance. There are often no symptoms until the condition has worsened, hence regular screening is important.
- Cirrhosis of the liver
A condition where normal liver is permanently damaged and replaced with scar issue. There are many different causes including infections, alcohol abuse and diabetes.
- Sleep disorder
Sleep disorders are conditions that affect the quality, timing or duration of your sleep, impacting your ability to function when you are awake. There are many types of sleep disorders, they include disturbances in the quality or quantity of sleep or excessive daytime sleepiness, abnormal behaviors that occur during sleep, sleep disorder related to a mental disorder and many more.
- Leg cramps
- Common cold (upper respiratory tract infection)
- Diabetic neuropathy
Related serious diseases
- Heatstroke
This is a life threatening emergency where the person's body temperature is dangerously elevated and they display neurologic abnormalities. This occurs when the body fails to regulate its temperature properly. It can be caused by the surrounding environment (heat, moisture) or internal factors (dehydration, strenuous exercise).
- Pneumonia (lower respiratory tract infection)
- Right heart failure
- Tuberculosis (TB) (including scrofuloderma)
Questions your doctor may ask about this symptom
Your doctor may ask these questions to check for this symptom
Do you feel fatigued?
Do you get tired easily?
Do your symptoms of feeling tired and unwell get better or worse throughout the day?
Do you feel more fatigued in the morning?
Do you feel more fatigued and unable to move your muscles in the evenings compared to the mornings?
Other Related Symptoms
Similar symptoms or complaints
Symptoms from the same body system / part
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Developed by doctors.
Ubie is supervised by 50+ medical experts worldwide
Seiji Kanazawa, MD, PHD
Obstetrics and gynecology (OBGYN)
National Center for Child Health and Development, Japan