Headache and nausea often occur together.

This can happen inprimary headache disorderslikemigrainesin which the headache causes the nausea.

Headacheandnauseacan also occur together as co-symptoms of an illness such as stomach flu or food poisoning.

Sick Asian woman looking at thermometer

Hill Street Studios / Getty Images

Common triggers include:

Specific triggers vary from person to person.

If you experience this condition, its important to determine what your triggers are.

These symptoms can vary in severity.

Infection or Illness

Many illnesses and infections can make you nauseous and leave your head aching.

Dietary allergies can also help set off migraine attacks.

It raises the risk of strokes, heart attacks, and many other issues.

Mild to verysevere headachesare common along with nausea.

There are some basic strategies, though, that can help with many cases of headaches and nausea.

Strategies to try include:

Stay Hydrated

Dehydration is a very common cause of headaches and nausea.

Drinking water when you have an attack can go a long way in easing it.

Called a bland diet, it can also help ease nausea related to headaches.

Taking larger amounts of these drugs over a longer period of time can make your symptoms worse.

Additionally, over-the-counter medications or prescribed medications are considered.

National Institutes of Health.Headache: Hope through research.

Harvard Health Publishing.Headache pain: When to worry, what to do.

Anxiety and Depression Association of America.Headaches.

American Psychological Association.Stress effects on the body.

National Headache Institute.Can food allergies cause headaches?

American Heart Association.What are the symptoms of high blood pressure?

National Library of Medicine.Low blood sodium.

American Migraine Foundation.Menstrual migraine: treatment and prevention.

Centers for Disease Control and Prevention.Coronavirus disease (COVID-19): symptoms.

Johns Hopkins.Headaches in Early Pregnancy.

National Library of Medicine.Bland diet.

Robblee J, Starling A.SEEDS for success: lifestyle management in migraine.Cleve Clin J Med.

2019;86(11):741-749. doi:10.3949/ccjm.86a.19009

National Library of Medicine.Headaches: danger signs.

Harvard Health.Headache pain: when to worry, what to do.

Published February 3, 2021.