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Doctor insights on: How Long Does Fatigue Associated With The Flu Last

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How long can fatigue last with the flu?

How long can fatigue last with the flu?

Days to weeks: Fatigue aftrer influenza can last days to weeks. It depends on your general health, how il you were, and if you had any complcations such as sinus infection, or pneumonia. Some have a mild illness and may have minimal fatigue. Influenza is an acute severe illness. It can be prevented by yearly influenza vaccine

Dr. Mark Diamond
2,227 Doctors shared insights

Fever (Definition)

Fever = elevated body temperature (can be ...Read more


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How long should the flu last? I've had a headache, on and off brain fog/confusion, and extreme fatigue for the last 5 days and I'm not getting better.

How long should the flu last? I've had a headache, on and off brain fog/confusion, and extreme fatigue for the last 5 days and I'm not getting better.

Do you get migraines: Sounds more like a prolonged migraine, or status migrainosus, and not the flu. Please call your pediatrician. Feel better!

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I have the flu should I worry about my extreme fatigue and tiredness? I have no fever or pain no longer hardly a cough and I'm eating. This is day 3

I have the flu should I worry about my extreme fatigue and tiredness? I have no fever or pain no longer hardly a cough and I'm eating. This is day 3

Flu is bad: Influenza this year and most years is a very nasty experience and it lasts five to ten days. Any infection may be followed by a period of convalescence, something known to us all but which is poorly understood. In any case, take it easy, drink fluids plus and take tylenol (acetaminophen) for headache, eat as you can with healthy foods, take vitamins and you will recover completely.

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Should I take tamiflu? Experiencing mildly bad body aches, nausea and fatigue, but no fever over last 24 hours (I know its not a cold).Maybe the flu

Should I take tamiflu? Experiencing mildly bad body aches, nausea and fatigue, but no fever over last 24 hours (I know its not a cold).Maybe the flu

Maybe: I probably would if I had a positive flu test, but not without. It slows down flu reproduction within the body but does not kill it like an antibiotic.It also has side effects of variable intensity that can mimic flu symptoms.

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I have been fatigued with chills and sweating no fever for a week the last couple days I've had a weak dry cough. Is this the flu? Or something else?

I have been fatigued with chills and sweating no fever for a week the last couple days I've had a weak dry cough. Is this the flu? Or something else?

Doubt the flu: Especially with no fever. Talk to your doctor. Sound viral and needs to run its course. But touch base with the doc to be sure

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My dad has 22.45 WBC with 71.1% NEU and 18% LYM. No chest nodules, joint/bone pain or above mild fatigue - can lift stuff and doesn't sleep to long or too short. He's a smoker. No sight problems or body ache. He only had the flu the day he gave the sample

My dad has 22.45 WBC with 71.1% NEU and 18% LYM. No chest nodules, joint/bone pain or above mild fatigue - can lift stuff and doesn't sleep to long or too short. He's a smoker. No sight problems or body ache. He only had the flu the day he gave the sample

Respiratory illness: I'm so sorry your father isn't feeling well. Studies show smokers are at high risk for community acquired pneumonia, chronic obstructive pulmonary disease and lung cancer. The influenza virus predisposes to superinfection with bacterial pneumonia and based on pulmonary exam I would treat your father for a mixed infection with oseltamivir and either azithromycin or moxifloxacin/ dep on risk factors

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Temp of 102 & Dry Throat & Complete Exhaustion. Tested negative for the flu last week now I have this should I get tested again?

Temp of 102 & Dry Throat & Complete Exhaustion. Tested negative for the flu last week now I have this should I get tested again?

May test strep, flu: Nose and throat symptoms can be from flu viruses, strep throat, allergies, etc., except that allergies usually don't cause a fever. Flu is ususally feverish. Doctors have rapid 5-minute tests for strep, so a primary care Dr. Can diagnose strep and start antibiotics "right away", which means within the first 3 days of a strep throat infection. Doctors also have a 15-minute test for Flu A and Flu B.

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I have had the flu for 1 week now, is it normal to still have fatigue? I feel so tired and worn out.

The normal course: Of influenza is 7-14 days. Therefore fatigue at this point is very "normal". Continue to rest, drink fluids, eat well. Always a good practice to get a yearly flu shot to try and prevent this not so innocent disease.

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Headache light headed nausea fatigue of this the flu?

Headache light headed nausea fatigue of this the flu?

Symptoms: You may have the flue, in which case drink lots of fluids and stay hydrated. May also be symptoms of a migraine. If it continues for more than 1-2 days, call your doctor.

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Is it a cause of concern when you get over the flu and then have similar symptoms 9 days later? Symptoms: fatigue, chills, hot flashes, and body aches

Is it a cause of concern when you get over the flu and then have similar symptoms 9 days later? Symptoms: fatigue, chills, hot flashes, and body aches

Flu: You have to differentiate between 2 things that may happen after flu: one is bacterial infection (staph pneumonia) which usually presents with high grade fever, chills, cough w\o chest pain. The other thing is the post viral syndrome which usually a continuation of the flu symptoms but get milder with time.

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Can it be the flu if I have headache, body aches and fatigue but no cough or fever?

Can it be the flu if I have headache, body aches and fatigue but no cough or fever?

Probable influenza: Yes, this certainly could be the 'flu' because u may have 'muted' your fever with over the counter 'cold' medicines that contain tylenol (acetaminophen) or aspirin/NSAIDs like motrin. It's flu season now in the Northern hemisphere and we doctors like to say "common things are common". So I would start with a flu swab-which should tell u very quickly if u have the flu, then give u antivirals to help. Call ur doc!

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Flu like symptoms chills, major fatigue, headache coughing congestion no fever. Flu test was negative but feels like the flu?

Flu like symptoms chills, major fatigue, headache coughing congestion no fever. Flu test was negative but feels like the flu?

Flu: The test Is not. 100% accurate. I would treat it as flu. Take 2 extra strength Tylinol every 4 hours, Push fluids and rest. The symptoms should gradually disappear but if not see physician again

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I have running leaking nose, dry cough, fatigue. Was wondering if its just a cold or the flu? What is tge difference? Anything I can take?

I have running leaking nose, dry cough, fatigue. Was wondering if its just a cold or the flu? What is tge difference? Anything I can take?

Maybe strep, flu, etc.: Mild nose and throat symptoms can be from cold viruses, strep throat, allergies, etc., except that allergies usually don't cause a fever. Doctors have rapid 5-minute tests for strep, so a primary care doctor can diagnose strep and start antibiotics "right away", which means within the first 3 days of a strep throat infection. Doctors also have a 15-minute test for Flu A and Flu B.

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Is it still considered the flu if the symptoms are vomiting the first day then fatigue, hot flashes, extreme sensitivity to cold and body aches?

Is it still considered the flu if the symptoms are vomiting the first day then fatigue, hot flashes, extreme sensitivity to cold and body aches?

Maybe: Flu can cause vomiting though that's less likely than fever and bad cold symptoms. Other viruses that feel like the flu but more likely to cause vomiting. Adenovirus very common in our area right now. It can cause everything associated with a cold and everything associated with a stomach bug. Just for fun you can also get pink eye, rash, viral meningitis, and blood in urine. Lasts 7-14 days, too.

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I was put on cephalexin for an outer ear infection1 day ago. I have nausea and fatigue. Am I just having side affects or the flu?

I was put on cephalexin for an outer ear infection1 day ago. I have nausea and fatigue. Am I just having side affects or the flu?

Both possible: It is certainly unusual for an "outer ear infection" to produce nausea and fatigue. Also strange presentation for influenza. Would check back with the doctor who gave you the cephalexin.

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I am experiencing upper back muscle pain with extreme fatigue. I feel like I have been getting the flu for a week but never get sick?

I am experiencing upper back muscle pain with extreme fatigue. I feel like I have been getting the flu for a week but never get sick?

Blood Infection?: Your symptoms could still be the flu. Time will tell. If you don't improve after another week, see your doctor and get a CBC and two blood cultures. Low back pain is a common symptom of a blood infection.

Dr. Michael Rothman
1,268 Doctors shared insights

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