Medical causes – unrelenting exhaustion may be a sign of an underlying illness, such as a thyroid disorder, heart disease or diabetes. Lifestyle-related causes – alcohol or drugs or lack of regular exercise can lead to feelings of fatigue.
Many possible factors cause chronic fatigue, such as underlying medical conditions, nutrient deficiencies, sleep disturbances, caffeine intake, and chronic stress. If you're experiencing unexplained fatigue, it's important to talk with your doctor to find the cause.
Call for an appointment with your doctor if your fatigue has persisted for two or more weeks despite making an effort to rest, reduce stress, choose a healthy diet and drink plenty of fluids.
There are three types of fatigue: transient, cumulative, and circadian: Transient fatigue is acute fatigue brought on by extreme sleep restriction or extended hours awake within 1 or 2 days.
There are no medical tests to measure fatigue. But a good way to describe fatigue is on a scale of 1 to 10. Where 1 means you don't feel tired at all and 10 means the worst tiredness you can imagine. Some may use a questionnaire to help them work out how it's affecting you.
The term fatigue describes being extremely tired, sleepy, exhausted or having a general lack of energy. “Being fatigued not only is a physical feeling, it can also be a mental feeling, too,” Robinson says.
Even a week of feeling more tired than usual is not uncommon. Yet most people can tell when their fatigue feels like something more serious. If that's the case, or your fatigue gets worse or lasts longer than a week or two, it's time to see your doctor.
If fatigue has become just another aspect of your (barely) waking hours, it could be a sign of a heart problem. Extreme fatigue can signal heart failure or, less commonly, coronary artery disease (CAD).
Fatigue can have a variety of causes. Some conditions that cause fatigue include thyroid disorders, iron deficiency anemia, diabetes, chronic fatigue syndrome, and COVID-19. Some other causes of fatigue may involve your diet, sleep, and levels of stress.
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a serious, long-term illness that affects many body systems. People with ME/CFS are often not able to do their usual activities. At times, ME/CFS may confine them to bed. People with ME/CFS have severe fatigue and sleep problems.
Chronic fatigue syndrome (CFS) is characterized by profound tiredness, regardless of bed rest. Its symptoms may worsen with physical or mental activity. CFS can happen suddenly and last for years. The condition affects more females than males.
But myalgic encephalomyelitis / chronic fatigue syndrome (ME/CFS) isn't just being tired. It's a new state of fatigue that has lasted for at least 6 months and can be so severe that it gets in the way of your normal daily activities, at home and at work. Rest and sleep don't seem to help.
Testing for MTHFR. A simple swab or blood test can determine whether an individual has a mutation on either the C677T and/ or the A498C variants. This test can provide vital information into potential causes of fatigue which may be readily rectified should the MTHFR polymorphism be involved.
There's no simple blood test or X-ray to diagnose chronic fatigue syndrome – also known as myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).
Myalgic encephalomyelitis, also called chronic fatigue syndrome or ME/CFS, is a long-term condition with a wide range of symptoms. The most common symptom is extreme tiredness. ME/CFS can affect anyone, including children. It's more common in women, and tends to develop between your mid-20s and mid-40s.
The cause of chronic fatigue syndrome is unknown, although there are many theories — ranging from viral infections to psychological stress. Some experts believe chronic fatigue syndrome might be triggered by a combination of factors. There's no single test to confirm a diagnosis of chronic fatigue syndrome.
Extreme fatigue
Feeling tired all the time can be a symptom of heart failure, as well as of other conditions. Professor Newby says: “Many of my patients tell me they're tired, whether they've got heart failure or not, whether they've got angina or not!
SMI warning signs
Discomfort in the center of the chest that lasts several minutes, or goes away and comes back. It can feel like an uncomfortable pressure, squeezing, or pain. Discomfort in other upper-body areas, such as one or both arms, the back, the neck, the jaw, or the stomach.