What Is Cervical Radiculopathy? Causes, Symptoms and Diagnosis

What cervical radiculopathy actually is

Between each pair of vertebrae in the neck, a nerve root exits the spinal canal through a small opening called the intervertebral foramen. Cervical radiculopathy occurs when one of these nerve roots becomes compressed or irritated, disrupting the signals it carries to and from the arm.

Because each nerve root supplies a specific area of skin (a dermatome) and specific muscles (a myotome), the symptoms often follow a recognisable pattern down the arm rather than staying in the neck.

Common causes

In younger people, the most common cause is a cervical disc herniation, where the soft inner material of a disc bulges and presses on the nearby nerve root. In older adults, age-related changes are more typical.

• Cervical disc herniation pressing on a nerve root
• Degenerative changes and bony spurs (cervical spondylosis) narrowing the foramen
• Foraminal stenosis - a gradual narrowing of the nerve's exit
• Less commonly, trauma, infection, or a space-occupying lesion

Symptoms to recognise

Symptoms usually affect one arm and often follow a single nerve root's distribution. The neck may or may not be painful.

• Sharp, burning, or electric pain radiating from the neck into the shoulder, arm, or hand
• Tingling or pins and needles in specific fingers
• Numbness in a defined patch of skin
• Weakness in particular arm or hand movements
• Symptoms that ease when the hand is placed on top of the head (the shoulder abduction relief sign)

How it is diagnosed

Diagnosis is primarily clinical. A thorough history and examination - including dermatome, myotome, and reflex testing - build a hypothesis that special tests then help confirm or refute.

Clinicians often use Wainner's cluster: a positive Spurling's test, cervical distraction, upper limb tension test, and cervical rotation of less than 60° toward the symptomatic side. Three or four positive findings substantially raise the probability of cervical radiculopathy. Imaging such as MRI is reserved for persistent, severe, or progressive cases, or where red flags are present.

When to seek urgent assessment

Most cervical radiculopathy settles with conservative care, but some features need prompt review.

• Progressive or significant arm weakness
• Symptoms in both arms, or any leg symptoms or balance problems (possible myelopathy)
• Loss of bladder or bowel control
• Severe pain after trauma, or unexplained weight loss, fever, or night pain

Key takeaways

• Cervical radiculopathy is a pinched or irritated nerve root in the neck.
• It causes pain, tingling, numbness, or weakness that travels into the arm in a nerve-specific pattern.
• Disc herniation is the common cause in younger people; degenerative narrowing in older adults.
• Diagnosis is clinical, supported by Wainner's cluster; imaging is reserved for selected cases.
• Seek urgent review for progressive weakness, bilateral symptoms, balance changes, or bladder/bowel problems.

Frequently asked questions

What is the difference between cervical radiculopathy and a pinched nerve?

They describe the same thing. 'Pinched nerve' is the everyday term, while cervical radiculopathy is the clinical name for compression or irritation of a nerve root in the neck.

Is cervical radiculopathy serious?

Most cases are not dangerous and improve with conservative care over weeks to months. However, progressive weakness, symptoms in both arms, balance changes, or bladder and bowel problems need prompt medical assessment.

How long does cervical radiculopathy last?

Many people improve substantially within 6–12 weeks with conservative management. Some have a longer course, and a minority with persistent or severe compression are considered for further investigation or specialist referral.