The MRI shows that the cervical spine is normal, but what is the cause of the numbness in the arm?

There are many possible causes of arm numbness, ranging from mild to severe. Simply sitting or sleeping in the wrong position can restrict blood flow or put too much pressure on the nerves, causing the arm to become numb. However, unexplained arm numbness may indicate an underlying health condition, such as nerve damage, a herniated disc, or cardiovascular disease.

Serious causes of arm numbness include heart attacks and strokes. <>

A person may experience numbness in the arm due to poor blood circulation. Blocked or compressed blood vessels can interfere with blood circulation to the heart. Poor circulation can cause numbness and tingling in the arms, hands, legs, and feet.

Poor circulation is not a disease in itself, but it can happen if a person is not active enough throughout the day. It can also be a symptom of other conditions, including the following, atherosclerosis occurs when cholesterol deposits build up in the blood vessels. The buildup of plaque can lead to hardening and narrowing of the arteries, which restricts blood flow.

A blood clot forms when clotted blood clumps together inside a blood vessel. A blood clot can cause a partial or complete blockage in a blood vessel. Peripheral artery disease is a type of atherosclerosis in which plaque builds up in the arteries in the arms and legs.

Diabetes affects the circulatory system because high blood sugar can lead to plaque formation and damage to blood vessels. Poor circulation** depends on the underlying cause. Wearing a compression pack can help reduce swelling in the limbs.

Exercise also helps improve blood circulation. <>

Peripheral neuropathy of the arm includes a variety of disorders that damage the peripheral nervous system. Peripheral neuropathy causes a range of symptoms, depending on the nerves it affects. In general, patients with peripheral neuropathy may experience:

Numbness or tingling in the arms, hands, legs, or feet, increased sensitivity to touch and temperature changes, muscle weakness, uncontrollable muscle twitching, muscle atrophy, or muscle loss. A herniated disc occurs when the soft nucleus of the disc slides through a crack on its exterior. A herniated disc can compress the surrounding nerves, which can cause numbness or pain in the arm.

If there is numbness and weakness in the arm, in addition to the possibility of cervical spondylosis, it is also necessary to consider whether there is sympathetic cervical spondylosis, cerebrovascular organic lesions, diabetes mellitus, peripheral neuritis, etc., so further examination is needed for differential diagnosis.

It may be that there is a disease that cannot be detected by MRI, and it can be examined by ultrasound or other means.

There may be other problems, such as poor blood circulation, etc., and it is recommended to check the writing items more often to find the specific root cause.

The numbness and swelling of the arm may be caused by the use of a lot of gravity in the hands recently, or the blood circulation in the hands is not smooth.

It could be a lumbar spine problem, or a brain problem, or a neurological problem in the arm. These must be checked, not only the cervical spine is normal to determine that the cervical spine and lumbar spine are fine, and the other positions are fine.