Risks of sudden neck movements on blood vessels

Cracking the neck can typically cause damage to the vertebral artery, and in rare cases, may lead to an ischemic stroke. The cracking sound itself is not a sign of a serious condition, as it often results from changes in pressure within the synovial fluid, causing tiny gas bubbles to burst during movement. Sometimes, the cracking sound is caused by tendons and ligaments. The danger arises when a person regularly tries to intentionally crack their neck by moving it with rapid, sharp movements, because the vertebral arteries, which supply blood to the posterior regions of the brain, pass through the neck. Excessive rotation or hyperextension of the head can damage the lining of these blood vessels, a condition known as vertebral artery dissection. A blood clot may form at the site of injury, potentially obstructing blood flow, and in some cases, leading to an ischemic stroke.

Doctors note that such complications are rare, and most people who occasionally crack their necks do not experience them. However, the risk increases among patients with vascular diseases, congenital connective tissue disorders, neck injuries, or those subjected to forceful manipulation of the neck. Severe, unusual neck or occipital pain following a sudden movement, dizziness, loss of balance, double vision, limb numbness, or weakness warrant an urgent medical visit. The persistent urge to “crack” the neck is often linked not to vertebral misalignment, but to muscle strain, poor posture, a sedentary lifestyle, or spinal issues. While the cracking sound may provide temporary relief, it does not address the underlying cause of pain. Ultimately, hearing a crack occasionally is not a cause for concern, but making sudden neck movements a daily habit is not advisable.

Source: Izvestia newspaper