While experts aren't exactly sure what causes lasting fatigue and long COVID-19, some researchers say that the body's natural response may be thrown off after it comes in contact with certain types of infection.
Your recovery from COVID-related fatigue will likely depend on how severe your illness was. After a mild case of COVID-19 your fatigue may clear up after about 2-3 weeks. But if you had a severe case, it's possible to feel sluggish and tired for months.
Additionally, the high catabolic response to COVID-19 infection, leading to weight loss and muscle decline, might further contribute to the manifestation of fatigue. Loss of muscle mass and strength is a whole-body process that also affects respiratory muscles.
As a study in the journal Frontiers in Pediatrics notes, another theory is that the virus overloads the immune system, causing a reaction that triggers symptoms similar to those of CFS. The authors of an earlier study suggest that the symptom of fatigue after a viral infection is due to inflammation in the brain.
But some people may be infectious for up to 10 days. Symptoms in children and babies are milder than those in adults, and some infected kids may not show any signs of being unwell. People who experience more serious illness may take weeks to recover. Symptoms may continue for several weeks after infection.
If it's a viral illness, typically symptoms are shorter lasting and classically the symptoms include fever, chills, sore throat, nasal congestion, runny nose, cough, and a lot of times you can have some body aches. A lot of times the symptoms last for maybe three days to a week and then slowly get better over time.
After a positive test result, you may continue to test positive for some time. Some tests, especially PCR tests, may continue to show a positive result for up to 90 days. Reinfections can occur within 90 days, which can make it hard to know if a positive test indicates a new infection.
A person may have mild symptoms for about one week, then worsen rapidly. Let your doctor know if your symptoms quickly worsen over a short period of time.
Naturally-occurring food supplements, such as acetyl L-carnitine, hydroxytyrosol and vitamins B, C and D hold significant promise in the management of post-COVID syndrome.
Medical causes– unrelenting exhaustion may be a sign of an underlying illness or condition (such as flu, glandular fever, chronic fatigue syndrome, thyroid disorders, heart disease or diabetes). Lifestyle-related causes – alcohol or drugs or lack of regular exercise can lead to feelings of fatigue.
Mild illness: Individuals who have any of the various signs and symptoms of COVID-19 (e.g., fever, cough, sore throat, malaise, headache, muscle pain, nausea, vomiting, diarrhea, loss of taste and smell) but do not have shortness of breath, dyspnea, or abnormal chest imaging.
Fatigue is a lack of energy and motivation. Drowsiness and apathy (a feeling of not caring about what happens) can be symptoms that go along with fatigue. Fatigue can be a normal and important response to physical activity, emotional stress, boredom, or lack of sleep.
Extreme fatigue in women can be caused by high sleep debt, being out of sync with your circadian rhythm, your menstrual cycle and period, pregnancy, menopause, hormonal contraceptives, poor diet, lack of exercise, stress and anxiety, medication side effects, and medical conditions like thyroid issues or anemia.
Those with severe COVID-19 may remain infectious beyond 10 days and may need to extend isolation for up to 20 days. People who are moderately or severely immunocompromised should isolate through at least day 20.
On June 30, the Centers for Disease Control and Prevention added three symptoms to its COVID-19 list: Congestion/stuffy nose, nausea and diarrhea. Those three new conditions now join other symptoms identified by the CDC: Fever.
According to the CDC, if you have mild to moderate COVID-19, you may be contagious for 10 days from the first day you noticed symptoms. If you were severely affected or critically ill from COVID-19, you may stay infectious for up to 20 days from the start of your symptoms.
Even if mild symptoms remain, you are likely not contagious after 10 days. However, if you have a weakened immune system or severe illness (requiring hospitalization, intensive care or even intubation), you can be contagious for up to three weeks or more.
Talk to your healthcare provider for more information. If testing is available in your community, it may be recommended by your healthcare provider. You can be with others after you receive two negative test results in a row, at least 24 hours apart.
You can have COVID-19 and spread it to others even if you do not have symptoms. Your COVID-19 test can be negative even if you are infected. Most people do not test positive for the virus until days after exposure. You may also be exposed to the virus afteryou are tested and then get infected.
Medications a healthcare provider might prescribe to treat viral infections include antiviral medications, convalescent plasma and post-exposure prophylaxis.