Pulsating Neck Veins

Neck veins vs neck arteries: what you are seeing

Two kinds of pulsation are visible in the neck:

A visible carotid pulse is normal in thin people and during exercise or anxiety. A forceful, bounding carotid pulse can occur with fever, anemia, an overactive thyroid or a leaky aortic valve.

Why neck veins bulge

The internal and external jugular veins drain blood from the head back to the right side of the heart. There are no valves in between, so the height of the column of blood in these veins acts like a pressure gauge for the right atrium. Doctors call this the jugular venous pressure (JVP).

When you lie flat, the veins fill and bulge in everyone. When you sit up at 45 degrees, the top of the visible pulsation in a healthy person is no more than about 3 cm above the angle where the breastbone meets the ribs. A higher level means the pressure in the right heart is raised.

Normal reasons for visible neck veins

• Lying flat or with the head lower than the chest
• Straining, lifting, coughing, laughing, singing or playing a wind instrument (these raise chest pressure for a moment)
• Thin build or low body fat
• Pregnancy, which increases blood volume

These are harmless when the veins flatten as soon as you sit up and relax.

Medical causes of distended, pulsating neck veins

Heart failure

The most common cause. When the heart cannot pump efficiently, blood backs up into the veins. Heart failure also causes breathlessness, fatigue, ankle and leg swelling, a cough at night and needing extra pillows to sleep. Doctors use the JVP to judge how much excess fluid someone is carrying and whether treatment is working.

Fluid overload

Kidney failure, too much intravenous fluid, or salt and fluid retention from liver disease can overfill the circulation. See fluid overload.

Lung disease and pulmonary hypertension

Pulmonary hypertension (high pressure in the lung arteries) strains the right ventricle. Chronic lung disease such as COPD can lead to right heart failure, called cor pulmonale. A large blood clot in the lungs can raise the JVP suddenly.

Tricuspid valve disease

A leaking tricuspid valve lets blood surge back into the neck veins with every beat, producing large, obvious pulsations that can make the earlobes bob. It often accompanies pulmonary hypertension or occurs in people who inject drugs (from valve infection). See tricuspid valve disease.

Pericardial disease

• Cardiac tamponade: fluid around the heart squeezes it. Distended neck veins, low blood pressure and muffled heart sounds are an emergency.
• Constrictive pericarditis: a stiff, scarred sac around the heart. Neck veins may paradoxically rise when you breathe in.

Superior vena cava obstruction

A tumor (often lung cancer or lymphoma) or a clot around a catheter can block the large vein draining the upper body. The neck veins are swollen but do not pulsate, and the face, neck and arms swell. See superior vena cava syndrome.

Tension pneumothorax

Air trapped under pressure around a collapsed lung, usually after chest injury, pushes on the heart and great veins. It causes sudden breathlessness, chest pain and bulging neck veins and needs emergency treatment.

Heart rhythm problems

Some arrhythmias, such as complete heart block, cause occasional large "cannon" waves in the neck veins, felt as a pounding or fluttering in the neck. They may come with palpitations, dizziness or fainting.

When to worry about pulsating neck veins

The combination matters more than the veins alone. Seek care if the bulging:

• persists when you sit or stand upright
• comes with shortness of breath, swelling in the legs or belly, or rapid weight gain
• appears after chest trauma or with chest pain
• comes with swelling of the face and arms

How doctors evaluate distended neck veins

A doctor examines the JVP with you reclining at 45 degrees and your head turned slightly away. They may press on the upper belly for 10 seconds (the hepatojugular reflux test). A sustained rise in the neck veins suggests heart failure. They also listen to the heart and lungs and check for leg swelling and liver enlargement.

Tests may include:

• Echocardiogram: ultrasound of the heart that shows pumping, valves and any fluid around the heart
• ECG: heart rhythm and strain patterns
• Chest X-ray: fluid in the lungs, heart size, masses or a collapsed lung
• Blood tests: BNP or NT-proBNP (a heart strain marker), kidney and liver function, blood count
• CT scan: for suspected vena cava obstruction or lung clot

Treatment

Treatment targets the cause:

• Water tablets (diuretics), salt restriction and heart failure medicines to remove excess fluid
• Draining fluid from around the heart in tamponade
• A needle or chest tube for a tension pneumothorax
• Treating lung disease, pulmonary hypertension or valve disease
• Stents, chemotherapy or radiotherapy for vena cava obstruction

If you have heart failure, weigh yourself every morning and report a gain of 2 to 3 lb (about 1 kg) overnight or 5 lb (about 2 kg) in a week, since fluid shows on the scale before neck veins and ankles change much.

Frequently asked questions

Is it normal to see veins pulsing in your neck?

It can be. Neck veins commonly show when you lie flat, strain, cough or laugh, and are easier to see in thin people. They should flatten when you sit upright. Veins that stay bulging while sitting, especially with breathlessness or swollen ankles, should be checked by a doctor.

What does jugular venous distension mean?

It means the jugular veins in the neck are swollen because pressure in the right side of the heart is higher than normal. It is a sign rather than a disease. Common causes are heart failure, fluid overload, lung disease with right heart strain and tricuspid valve problems.

Can anxiety cause a throbbing neck vein?

Anxiety can make you notice a stronger pulse in the neck, but that is usually the carotid artery beating faster and harder, not the jugular vein. It settles as the anxiety passes. Veins that stay distended at rest are not explained by anxiety.

Why do my neck veins bulge when I lie down?

Lying flat removes the effect of gravity that normally drains the veins of the head and neck, so they fill up and become visible. This is normal. If you also feel breathless lying flat or need several pillows to sleep, see a doctor to check for heart failure.

Is a bulging neck vein on one side serious?

A prominent external jugular vein on one side is often normal, especially on the right. Swelling on one side with arm or face swelling, pain or a lump may point to a blocked vein or clot, which needs medical review.