Headache and Ear Pain on One Side: Causes

Quick answer

Usually the jaw joint, an ear infection, migraine or sinusitis; sudden severe headache or neurological symptoms are emergencies

Jaw joint disorders cause pain in front of the ear and at the temple, worse with chewing. Ear infections cause ear pain with muffled hearing and sometimes headache and fever. Migraine is often one-sided and can cause ear pain, sensitivity to light and sound, and nausea. Sinusitis causes facial pressure that spreads to the ear. Neck problems and occipital nerve pain cause headache at the back of the head behind the ear. Nerve pain such as trigeminal neuralgia causes brief electric-shock attacks. In people over 50, a new headache with scalp tenderness or jaw pain may be giant cell arteritis. A sudden, severe headache, weakness, facial drooping, confusion or a stiff neck with fever needs emergency care.

Why the head and ear hurt together

The trigeminal nerve, the facial and glossopharyngeal nerves, the vagus nerve and the upper neck nerves all carry sensation from parts of the ear. These same nerves supply the jaw, sinuses, teeth, throat, scalp and neck. Pain starting in any of these areas can therefore be felt as both headache and ear pain on one side.

Common causes

Jaw joint disorder (TMD): pain in front of the ear and at the temple, worse with chewing, clenching or in the morning; see pain in ear when chewing.
Ear infections: middle ear infection with deep ear pain and muffled hearing; outer ear infection with pain on touching the ear.
Migraine: throbbing headache, often one-sided, with sensitivity to light and noise, nausea and sometimes ear pain or fullness.
Sinusitis: facial pressure, blocked nose and thick discharge, with pain that can spread to the ear and head; see sinus headache.
Neck problems and occipital neuralgia: headache at the back of the head spreading behind the ear; see pain behind the ear.
Dental problems: back teeth and wisdom teeth refer pain to the ear and temple.
Eustachian tube dysfunction: ear pressure and popping with a heavy head during colds or flights.

Less common but important causes

Trigeminal neuralgia: sudden, very short electric-shock pains in the face, triggered by touch, chewing or talking.
Giant cell arteritis: in people over 50, new headache at the temple, scalp tenderness, jaw pain when chewing and sometimes visual changes: urgent same-day assessment.
Shingles of the ear (Ramsay Hunt syndrome): severe ear pain with a blistering rash in or around the ear, sometimes facial weakness and hearing loss.
Mastoiditis: swelling, redness and tenderness behind the ear after an ear infection, with fever.
Cluster headache: very severe pain around one eye with a watery eye and runny nose on the same side.

How to tell the causes apart

Worse with chewing or yawning: jaw joint.
Muffled hearing, discharge or fever: ear infection.
Light and noise sensitivity, nausea, known migraines: migraine.
Blocked nose and facial pressure: sinuses.
Pain at the back of the head, neck stiffness from posture: neck.
Brief electric shocks: nerve pain.

Keeping a short diary of when the pain appears, how long it lasts and what makes it better or worse helps the clinician reach a diagnosis.

What you can do at home

Paracetamol or ibuprofen if suitable.
Warmth on the jaw or neck muscles; a cool pack on the forehead for migraine.
Soft foods and jaw rest if chewing makes it worse.
Saline nasal rinses and steam for sinus congestion.
Rest in a dark, quiet room during a migraine.
Regular sleep, meals and fluids, and limiting screen time and caffeine.
Posture breaks and gentle neck stretches if you work at a desk.

How a specialist assesses it

An ENT specialist examines the ears, nose, throat, jaw joint and neck, and may check hearing. If the ear and sinuses are normal and the pattern suggests migraine or nerve pain, a neurologist may be involved. Blood tests are used when giant cell arteritis is suspected, and imaging is reserved for specific findings or warning signs.

When to seek urgent help

A sudden, severe headache, the worst you have ever had: call emergency services.
Weakness, numbness, facial drooping, difficulty speaking or confusion: call emergency services.
Headache with fever, stiff neck, rash or sensitivity to light.
New headache with scalp tenderness, jaw pain or visual changes over age 50.
Swelling and redness behind the ear, or a rash with blisters on the ear.
Sudden hearing loss in one ear: same-day assessment.

Key points to remember

The head and ear share nerves, so one problem can cause both pains.
The jaw joint, ear infections, migraine and sinusitis are the most common causes.
The pattern of pain and associated symptoms point to the cause.
Sudden severe headache or neurological symptoms are emergencies.

Questions about headache and ear pain on one side

These answers are general information and do not replace an examination or individual medical advice.

Can an ear infection cause a headache on one side?

Yes. Middle ear infections can cause headache on the same side, often with fever and muffled hearing.

Can TMJ cause headaches and ear pain?

Yes. Jaw joint problems commonly cause pain in front of the ear and at the temple.

Can migraine cause ear pain?

Yes. Migraine can cause ear pain, fullness or ringing on the side of the headache.

When should I worry about headache and ear pain on one side?

With sudden severe headache, neurological symptoms, fever with stiff neck, swelling behind the ear or new headache over 50 with scalp tenderness.

Can sinusitis cause ear pain and headache?

Yes. Inflamed sinuses cause facial pressure and pain that can spread to the ear and head.

What doctor should I see for ear pain and headache?

Start with your GP or an ENT specialist. A neurologist may be involved if the ear and sinuses are normal.

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.