A headache refers to pain or discomfort in your head or neck, which includes your sinuses and scalp. Nausea refers to discomfort in the stomach that makes you feel like you are going to vomit.

Nausea and headaches are common symptoms. They can be mild or severe.

Sometimes, nausea and headaches can co-occur. Sometimes, headaches and nausea can be signs of severe medical conditions that require immediate treatment. How to recognize an emergency in medical care.

Woman suffer from nausea

Common causes of headaches and nausea


Many people with migraine headaches also have stomach issues. These headaches are reported by 88% of Americans.

Some conditions associated with migraines are more likely than others to cause nausea and vomiting. These conditions include:

  • An aura or mild headaches can cause migraine. A person with migraines and aura usually experiences warning signs 20 minutes to an hour before the headache starts, such as nausea, vision problems, and dizziness.
  • Abdominal headache. In some cases, migraines can cause stomach pain in children. These can cause nausea or vomiting.
  • Benign paroxysmal vertigo can also be a sign of migraine in children. However, it is possible for anyone to experience this condition, even if they have never had a migraine. This is most common in people older than 60. It can feel as if the room is spinning or moving. They might vomit or get sick to their stomach.
  • This is a form of Cyclic Vomiting Syndrome. It can cause nausea and vomiting in children, lasting for hours or even days. Although the condition isn’t related to migraine, it does seem that they are both connected. Many children with cyclic vomiting syndrome develop migraines as adults.


You might wake up with a splitting headache, nausea, vomiting, stomach pain, or both. You may also feel dizzy, thirsty, and sensitive to sound and light. When you stop drinking alcohol, you might experience headaches and nausea with vomiting.

Caffeine withdrawal can happen, regardless of whether you have missed your morning coffee or are trying to reduce caffeine intake. As a result, you might experience nausea, headaches, tiredness, or trouble concentrating.

You may experience nausea or vomiting from stomach flu, cold, or stomach flu. You may also experience other symptoms such as a runny or irritable nose, diarrhea, and body aches. The virus will determine which symptoms you experience.


Foods can trigger headaches. The pain will likely be felt around your sinuses, but it will only affect one side. Nevertheless, it can cause nausea and throbbing sensations. It might be worsened by the sun.

Blood Sugar

You might skip a meal or eat high- sugar dessert, and your blood sugar falls. As a result, you might feel nauseated and have headaches. It could also cause you to feel confused, faint, or sweaty. High blood sugar can also cause headaches. High blood sugar in people with diabetes can lead to severe conditions such as diabetic ketoacidosis. In addition, it can cause nausea, vomiting, weakness, confusion, and even coma.

Nicotine. A high nicotine intake can cause nausea, headaches, and vomiting. In addition, a fast heartbeat, tightness, or difficulty breathing might be signs of migraines.


Increases in hormone levels can cause headaches. They usually occur 2 to 3 days before your period or within the first three days. You will feel a throbbing sensation on one side of the head, along with nausea and sensitivity.


Migraines can occur in pregnancy. You might feel pain in one side of the head, and you may also feel nauseated. Headaches can also be caused by dehydration due to pregnancy-related nausea. Some women experience fewer migraines during pregnancy, while others see an increase in headaches.


High blood pressure during pregnancy. Some symptoms may not be apparent. You might also experience severe headaches, vision problems, nausea, vomiting, and less urine.

Endometriosis. Sometimes, the tissues that line a woman’s uterus may grow outside of it, causing severe pain and bleeding, fertility issues, fatigue, and other problems. In addition, during their period, some women may experience nausea, headaches, or dizziness.


This bacterial infection may cause nausea , headaches, a fever, and body aches.

Tonsillitis. Most children are affected by this infection. This infection is usually caused by a virus but can also be caused by bacteria. It can also cause nausea and headaches, as well as a sore or sore throat.

Depression, stress, anxiety, and stress can all be symptoms.


Similar symptoms are seen in the viruses that cause COVID-19, severe acute respiratory syndromes (SARS), and Middle East respiratory syndromes (MERS). These symptoms include headaches, nausea, vomiting, and fever.

Food Poisoning

Many germs in food could cause nausea and headaches. You might also become dehydrated if you are prone to vomiting a lot. This can cause headaches.

High Blood Pressure

Severe headaches, nausea, vomiting, and dizziness are all signs of high blood pressure. This could be called a hypertensive, malignant, or hypertensive crisis.

Low Blood Salt

This may also be called hyponatremia by your doctor. Your body regulates sodium. Insufficient sodium can cause swelling in your cells, leading to headaches, nausea, vomiting, and confusion.

High Elevations

You might get altitude or mountain sickness if you travel to higher elevations than average. Two signs of mild illness are headaches and nausea.


High pressure in your eyes can lead to headaches, nausea, and vomiting.

Toxic-shock Syndrome. 

Most toxic shock cases occur in young women who use Tampons. There may be a variety of symptoms. The most common symptoms include a high fever and headache, sore throat or pinkeye, swollen lymph nodes, muscle aches, nausea, and vomiting.

Dengue Fever

Other signs of the dengue virus, also spread by mosquitoes through the skin, include severe headaches, high fever, and a skin rash. Other symptoms include vomiting, diarrhoea, chills, and nausea.

A black widow bite. These spider bites cause little to no pain, swelling, or redness. However, bites can sometimes cause nausea, vomiting, cramps, fever, stomach or chest pains, and cramps.


This bacteria disease can have symptoms that are similar to other diseases. These symptoms include fever, chills, headaches, muscle aches, and nausea.

Cluster headaches

These headaches could be caused by migraine. Your doctor will ask you about your headaches’ specific symptoms and frequency when you are seeking a diagnosis. These details will allow your doctor to determine if your headaches and nausea are due to migraines or another illness.

When is it essential to seek medical attention?

Mild to moderate headaches, nausea and vomiting will often resolve. Most cases of common cold or flu are reversible without treatment.

Sometimes, headaches and nausea can be signs of an underlying condition. However, if you have severe headaches or nausea that persists, it is vital to seek medical attention immediately.

If you have headaches or nausea, it is a good idea to see a doctor.

  • Dizziness
  • There is confusion
  • Slurred speech
  • Vomiting for longer than 24 hours
  • No urination after eight hours
  • A stiff neck and a fever
  • Loss of consciousness

If you suspect you need urgent care, seek help. It is better to be safe than sorry.

Even if you don’t experience nausea or headaches often, it is worth making an appointment with your doctor. Your doctor can diagnose the problem and suggest a treatment plan.

How can you treat headaches and nausea?

The cause of your headaches and nausea will determine the treatment plan you should follow.

Your doctor may try to manage any underlying medical conditions. For example, they may suggest lifestyle changes, medication, or other treatments help with migraines.

Sometimes lifestyle changes and home remedies can help you relieve symptoms. Take, for example:

  • Migraines can cause migraine headaches. If this happens, you should stay in a dark, quiet place and apply an ice pack wrapped in a cloth to your neck.
  • You can reduce stress by taking a walk or listening to soothing music if you suspect your headaches and nausea are due to stress.
  • You should drink water or eat if you feel you are dehydrated.

Your headache may be relieved by over-the-counter pain relief medications such as acetaminophen and ibuprofen. However, aspirin can be too harsh on your stomach and cause stomach upset.

Drugs for preventing postoperative nausea and vomiting in adults after general anesthesia

The Bottom Line

Migraine, which is often accompanied by nausea, can commonly cause headaches. Low blood sugar and dehydration are often responsible.

Some causes can be more severe. Many of these conditions can affect the brain. Therefore, additional symptoms are typical for these issues.

Talk to a doctor if you are unsure or worried about your headaches.


Healthcare Professional

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