Why dizziness and headache occur together
Dizziness and headache share many causes because they involve the same brain pathways, the inner ear and the blood vessels and blood pressure that supply the brain. A migraine, for example, can cause both pain and a sense of spinning or imbalance. Dehydration or low blood sugar reduces brain function and causes both symptoms at once. Understanding the type of dizziness helps: spinning (vertigo), lightheadedness or faintness, and unsteadiness are different. See vertigo and dizzy when lying down.
Common causes
- Migraine, with or without aura. See vestibular migraine.
- Tension-type headache, often with neck and shoulder tightness.
- Dehydration, heat, missed meals and low blood sugar.
- Low blood pressure or standing up too quickly (orthostatic hypotension).
- High blood pressure in some people.
- Anxiety, panic and stress. See anxiety symptoms.
- Lack of sleep, jet lag and shift work.
- Caffeine, alcohol, hangover and caffeine withdrawal.
- Colds, flu, COVID-19 and sinus infection.
- Medicines: blood pressure, antidepressant, sedative and many other drugs.
- Anaemia and thyroid problems.
Ear, sinus and neck causes
- Inner ear problems: labyrinthitis, vestibular neuritis, Ménière’s disease, BPPV. See Ménière’s disease.
- Sinus pressure and eustachian tube dysfunction. See sinus headache and Eustachian tube dysfunction.
- Neck problems (cervicogenic headache and dizziness) from posture, whiplash or arthritis.
- Temporomandibular joint problems and teeth grinding.
- Hearing loss and tinnitus accompanying dizziness need an ENT check. See sudden hearing loss.
Less common but serious causes
- Stroke or transient ischaemic attack, particularly with sudden onset, weakness, speech or vision change.
- Bleeding in or around the brain, or a head injury and concussion.
- Meningitis or encephalitis, with fever and stiff neck.
- Carbon monoxide poisoning, especially if several people in the same place feel unwell.
- Brain tumour or raised intracranial pressure, with progressive symptoms.
- Heart rhythm problems and heart attack in some cases.
- Severe high blood pressure.
Self-care for mild episodes
- Rest in a quiet, dim room; avoid sudden movements and screens.
- Drink water, and eat a small snack if you have missed a meal.
- Take paracetamol or ibuprofen as directed; avoid overuse of painkillers, which can worsen headaches.
- Move slowly when standing up; sit or lie down at the first sign of dizziness.
- Limit caffeine and alcohol, and keep a regular sleep schedule.
- Manage stress with breathing or relaxation. See deep breathing for anxiety.
- Keep a diary of triggers, timing and symptoms.
- Do not drive while dizzy.
Medical evaluation and treatment
A doctor will take a careful history, check blood pressure (lying and standing), pulse, blood sugar, neurological signs, ears and eyes, and may order blood tests, an ECG, balance testing, hearing tests or a scan. Treatment depends on the cause: migraine preventives or triggers management, vestibular rehabilitation, adjustment of medicines, hydration, treatment of sinus or ear disease or anxiety treatment. See vertigo exercises.
Red flags: when it’s an emergency
- Sudden, severe headache unlike any before.
- Dizziness with slurred speech, facial droop, weakness, numbness or confusion.
- Double vision, loss of vision or inability to walk straight.
- Headache and dizziness after a head injury.
- Fever with stiff neck, rash or sensitivity to light.
- Severe vomiting or fainting.
- Chest pain, palpitations or breathlessness.
- Several people in the same place with the same symptoms (possible carbon monoxide).
When to see a doctor
- Recurrent or worsening dizziness and headaches.
- Episodes triggered by head movement or lying down.
- Hearing loss, ringing in the ear or ear fullness.
- Headaches that wake you, or are worse in the morning with vomiting.
- Dizziness while taking new medicines.
- Persistent symptoms in people over 50 or with high blood pressure or diabetes.
- Any red flag above.
Three common situations
A person with a throbbing headache, nausea and a spinning feeling, relieved in a dark room: migraine or vestibular migraine.
An office worker who skipped lunch and feels lightheaded with a dull headache: low blood sugar and dehydration; eat, drink and rest.
A person with sudden severe headache and slurred speech: call emergency services.
Keeping a symptom diary
A simple diary shortens the path to a diagnosis. Record the date and time, what the dizziness felt like (spinning, faint, unsteady), how long it lasted, headache location and severity, what you had eaten and drunk, how much you slept, stress, medicines taken, menstrual cycle if relevant, and anything that triggered or relieved it. After two to four weeks, patterns often appear, for example episodes after missed meals, poor sleep or specific foods. Bring it to your appointment together with a list of medicines and supplements.
Preventing recurrences
- Eat regular meals and avoid long gaps without food.
- Drink enough water through the day, especially in hot weather or when exercising.
- Keep regular sleep and wake times.
- Limit caffeine and alcohol, and avoid sudden changes in caffeine intake.
- Manage stress with exercise, relaxation and breaks from screens.
- Review medicines that may cause dizziness with your doctor.
- Treat neck stiffness and posture with stretching or physiotherapy.
- Ask about migraine prevention if episodes are frequent.
Key points to remember
Dizziness with headache is usually migraine, tension, dehydration or low blood sugar, and improves with rest, fluids and food. Emergency signs include sudden severe headache, neurological symptoms or head injury. See a doctor for recurrent episodes. Our ENT team can assess balance and hearing.
This guide is for general information and does not replace an examination by your own doctor or ENT specialist.
Questions about dizziness and headache
These answers are general information and do not replace an examination or individual medical advice.
What causes dizziness and headache together?
Commonly migraine, tension, dehydration, low blood sugar, anxiety or low blood pressure.
When is dizziness with headache an emergency?
With sudden severe headache, weakness, slurred speech, facial droop, double vision, confusion or head injury.
Can dehydration cause both?
Yes, it is a very common cause.
Can an ear problem cause dizziness and headache?
Yes, inner ear conditions and vestibular migraine can cause both.
What helps at home?
Rest, fluids, regular meals, simple pain relief and moving slowly.
When should I see a doctor?
If episodes are recurrent, worsening, accompanied by hearing symptoms or triggered by head movement.
Sources
This guide is for general information and does not replace medical advice. How a problem is diagnosed and treated depends on your examination and medical history. If you think you have an emergency, contact your local emergency services.