Whiplash & Cervical Strain

Whiplash is a neck injury caused by a rapid back-and-forth motion of the head, most often after a rear-end car collision. It strains the muscles, ligaments, and small joints of the neck. Most people recover fully with simple, well-organized care, but some develop longer-lasting pain that benefits from specialty evaluation.

What's happening in your spine

A sudden acceleration or deceleration force flings the head forward and then back, stretching the soft tissues of the neck beyond their normal range. This can injure ligaments, facet joint capsules, muscle fibers, and occasionally the discs themselves. The result is pain, stiffness, and a temporarily very protective neck.

Common symptoms

• Neck pain and stiffness, usually starting within 24 hours of the injury
• Reduced range of motion when turning or looking up
• Headaches, often starting at the base of the skull
• Pain or tightness across the shoulders and upper back
• Tingling, numbness, or weakness into the arm if a nerve is irritated
• Difficulty concentrating, fatigue, dizziness, or sleep disturbance

Causes & risk factors

Motor vehicle collisions are by far the most common cause, especially rear-end impacts. Other causes include sports tackles, falls, assaults, and amusement park rides. Pre-existing neck arthritis or prior neck injury can make symptoms more severe and recovery slower.

How it's diagnosed

A careful history and neurological exam are the foundation. X-rays may be obtained after higher-energy injuries or in older patients. MRI is added when symptoms persist, when there are signs of a pinched nerve, or when there is concern about a disc or ligament injury.

Treatment options

Most patients recover within a few weeks to a few months. Early, gentle motion is more helpful than prolonged rest.

• Short-term use of acetaminophen or anti-inflammatory medication
• Heat or ice and gentle range-of-motion exercises within the first 1–2 days
• Physical therapy focused on restoring motion, strength, and posture
• Avoidance of prolonged soft collar use (it can slow recovery)
• Trigger point or facet joint injections for stubborn, focal pain

Surgery is rarely needed for whiplash itself. It may be considered if imaging shows a structural problem caused or unmasked by the injury — such as a herniated disc with arm weakness or instability of the cervical spine.

When to see a specialist

See a specialist if neck pain has not started to improve after 4–6 weeks, if you have arm pain, numbness, or weakness, if you are losing dexterity or balance, or if you have severe headaches that don't respond to standard care.