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Doctor insights on: Headache After Stomach Flu

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Why stomach flu associate with headache?

Why stomach flu associate with headache?

See below: Headaches are a general symptom of many viral illnesses, even stomach (GI) illnesses. This is due to the viral load triggering the general inflammatory response and with a stomach bug, if vomiting and diarrhea, could also be due to dehydration as well. Keep hydrated, and pain meds as needed.

Dr. Bennett Machanic
4,274 Doctors shared insights

Headache (Definition)

The medical term is cephalalgia. It is a feeling of pain that can occur on either both sides or just one side of the head or neck. Headaches can be sharp, dull, or throbbing, and can radiate to different areas of the head. They typically last less than an hour but can ...Read more


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I have been sick three times in the last month. Sinus infectio, stomach flu, and a cold again now. I now have terrible headaches since the flu.

I have been sick three times in the last month. Sinus infectio, stomach flu, and a cold again now. I now have terrible headaches since the flu.

Flu and headaches: You probably have a secondary sinus infection that needs antibiotics to cure. Do you have a doctor you can speak to to help you?

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I had stomach pain and started to feel sick. Plus had bad headaches it has been going on for 4 days now but I havnt vomited yet, is it a stomach flu?

I had stomach pain and started to feel sick. Plus had bad headaches it has been going on for 4 days now but I havnt vomited yet, is it a stomach flu?

Impossible to know: Without seeing and examining you after a full history, cannot venture a guess. There are many transient infections which can produce abdominal discomfort and nausea, including what you refer to as "stomach flu", although am not sure what that is.

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I have a headache, stomach ache, dizziness, and my vision is blurry; is this stomach flu?

I have a headache, stomach ache, dizziness, and my vision is blurry; is this stomach flu?

Could be: If the symptoms last a few days and get better on their own it could be a viral syndrome. If symptoms persist, or you are unable to keep enough down, seek medical attention.

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Yesterday I had the stomach flu with loose stools and vomiting, no fever! Today I have a sore neck and headache, is this normal? What should I do?

Yesterday I had the stomach flu with loose stools and vomiting, no fever! Today I have a sore neck and headache, is this normal? What should I do?

Likely a virus: Hello. It's likely that you have a virus, but you shuold follow-up with your primary doctor if your symptoms do not remit over the next 24 hours.

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Is it normal to have a headache after having fever (38.3c) following stomach flu? Fever has gone down but now has a dull sore headache. Not pregnant

Is it normal to have a headache after having fever (38.3c) following stomach flu? Fever has gone down but now has a dull sore headache. Not pregnant

Yes: Yes it could a sign of dehydration so drink plenty of water and juices or it could a reaction to a low grade fever, take Tylenol (acetaminophen). Or could be a pressure from sinus congestion take two Benadryl and a Tylenol (acetaminophen) at bed time and follow it with non drowsy allergy sinus medication like Zyrtec, Allegra, or Claritin. Not better make sure to check the BP and make sure it is not elevated and see a doctor

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Upset stomach, nausea, body aches, cough, headache an chills. Stomach flu or influenza?

Upset stomach, nausea, body aches, cough, headache an chills. Stomach flu or influenza?

Hard to say: Without running some tests. Best to get treated by your family physician to come to a specific diagnosis and treatment plans.

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Headache, fever, chills, abdominal pain, mild diarreah, body aches, bad nausea for almost 24 hours, able to eat toast, can this be a mild stomach flu?

Headache, fever, chills, abdominal pain, mild diarreah, body aches, bad nausea for almost 24 hours, able to eat toast, can this be a mild stomach flu?

Could be: It it has not resolved in 2-3 days, you may wish to consult your doctor. In the mean time make sure you drink enough liquids to keep hydrated. You may take over the counter medication like Tylenol (acetaminophen) for fever and pain. Unrelated to your question: If you do not wish to be pregnant, use contraception all the time, every time. You may consider implanted contraceptive, or IUD. Practice safe sex. Get HPV vaccine.

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Is ibuprofen (Advil/aleve) okay to take during stomach flu to treat headaches and cramps or will it lead to Reye's disease like aspirin?

Is ibuprofen (Advil/aleve) okay to take during stomach flu to treat headaches and cramps or will it lead to Reye's disease like aspirin?

Okay: It is okay to take ibuprofen or Naproxen while you have the stomach flu, as it will not lead to Reyes syndrome. However, these type of medications (NSAIDs) can further irritate your stomach. I would recommend trying acetaminophen first.

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Stomach flu for 2 days. No more pain, nor nausea, mild diarhea and fatigue. I have a massive headache. Too soon for advil (ibuprofen)? Stated eating this morn

Stomach flu for 2 days. No more pain, nor nausea, mild diarhea and fatigue. I have a massive headache. Too soon for advil (ibuprofen)? Stated eating this morn

Stomach flu: Is very common viral infection. Usually the condition resolves on its own with home care. Drink water and get a good rest. NSAIDs (e.g. Aleve, Advil) or Tylenol (acetaminophen) are also recommended every 6 hours. If concerned, see your PCP for examination.

Dr. David Cohen
836 Doctors shared insights

Stomach Flu (Definition)

Viral gastroenteritis is a viral infection of the GI tract. It can be picked up from contact with surfaces and foods that are carrying the virus. Symptoms include upset stomach, nausea, vomiting, diarrhea, and abdominal cramps. Sometimes ...Read more


Dr. Stephen Scholand
1,243 Doctors shared insights

Gastroenteritis (Definition)

A condition in which a person has vomiting and diarrhea due to an infection with "stomach flu" viruses. It is contagious, and usually resolves without treatment except for over-the-counter Pedialyte or other ...Read more