Herniated Disk: Symptoms and Treatment

Herniated Disk: Symptoms and Treatment

Herniated discs can occur in any part of the spine. Herniated discs are more common in the lower back (lumbar spine), but also occur in the neck (cervical spine). The area in which pain is experienced depends on what part of the spine is affected.

A herniated disk refers to a problem with one of the rubbery cushions (disks) that sit between the bones (vertebrae) that stack to make your spine.

A spinal disk has a soft, jellylike center (nucleus) encased in a tougher, rubbery exterior (annulus). Sometimes called a slipped disk or a ruptured disk, a herniated disk occurs when some of the nuclei push out through a tear in the annulus.

A herniated disk, which can occur in any part of the spine, most often occurs in the lower back. Depending on where the herniated disk is, it can result in pain, numbness, or weakness in an arm or leg.

Many people have no symptoms from a herniated disk. For people who do have symptoms, the symptoms tend to improve over time. Surgery is usually not necessary to relieve the problem.

 

Symptoms of Herniated Disk

Most herniated disks occur in the lower back, but they can also occur in the neck. Signs and symptoms depend on where the disk is situated and whether the disk is pressing on a nerve. Herniated disks usually affect one side of the body.

• Arm or leg pain. If your herniated disk is in your lower back, besides pain in your lower back, you'll typically feel pain in your buttocks, thigh, and calf. You might have pain in part of the foot as well.

For a herniated disk in your neck, you'll typically feel the most pain in your shoulder and arm. This pain might shoot into your arm or leg when you cough, sneeze, or move into certain positions. Pain is often described as sharp or burning.

• Numbness or tingling. People who have a herniated disk often have radiating numbness or tingling in the body part served by the affected nerves.
• Weakness. Muscles served by the affected nerves tend to weaken. This can cause you to stumble, or affect your ability to lift or hold items.

You can have a herniated disk without symptoms. You might not know you have it unless it shows up on a spinal image.

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When to see a doctor

Seek medical attention if your neck or back pain travels down your arm or leg, or if you also have numbness, tingling, or weakness.

Causes of Herniated Disk

Disk herniation is most often the result of gradual, aging-related wear and tear called disk degeneration. As people age, the disks become less flexible and more prone to tearing or rupturing with even a minor strain or twist.

Most people can't pinpoint the cause of their herniated disk. Sometimes, using the back muscles instead of the leg and thigh muscles to lift heavy objects can lead to a herniated disk, as can twisting and turning while lifting. Rarely, a traumatic event such as a fall or a blow to the back is the cause.

 

Risk factors of Herniated Disk

Factors that can increase the risk of a herniated disk include:

• Weight. Excess body weight causes extra stress on the disks in the lower back.
• Occupation. People with physically demanding jobs have a greater risk of back problems. Repetitive lifting, pulling, pushing, bending sideways, and twisting also can increase the risk of a herniated disk.
• Genetics. Some people inherit a predisposition to developing a herniated disk.
• Smoking. It's thought that smoking lessens the oxygen supply to disks, causing them to break down more quickly.
• Frequent driving. Being seated for long periods combined with the vibration from the motor vehicle engine can put pressure on the spine.
• Being sedentary. Regular exercise can help prevent a herniated disk.

 

Complications of Herniated Disk

Just above your waist, your spinal cord ends. What continues through the spinal canal is a group of long nerve roots that resemble a horse's tail (cauda equina).

Rarely, disk herniation can compress the entire spinal canal, including all the nerves of the cauda equina. In rare instances, emergency surgery might be required to avoid permanent weakness or paralysis.

Seek emergency medical attention if you have:

• Worsening symptoms. Pain, numbness, or weakness can increase to the point that they hamper your daily activities.
• Bladder or bowel dysfunction. Cauda equina syndrome can cause incontinence or difficulty urinating even with a full bladder.
• Saddle anesthesia. This progressive loss of sensation affects the areas that would touch a saddle — the inner thighs, the back of the legs, and the area around the rectum.

 

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Prevention of Herniated Disk

To help prevent a herniated disk, do the following:

• Exercise. Strengthening the trunk muscles stabilizes and supports the spine.
• Maintain good posture. This reduces pressure on your spine and disks. Keep your back straight and aligned, particularly when sitting for long periods. Lift heavy objects properly, making your legs — not your back — do most of the work.
• Maintain a healthy weight. Excess weight puts more pressure on the spine and disks, making them more susceptible to herniation.
• Quit smoking. Avoid the use of any tobacco products.

 

Diagnosis of Herniated Disk

During the physical exam, your doctor will check your back for tenderness. You might be asked to lie flat and move your legs into various positions to help determine the cause of your pain.

Your doctor may also perform a neurological exam to check your:

• Reflexes
• Muscle strength
• Walking ability
• Ability to feel light touches, pinpricks, or vibration

In most cases of a herniated disk, a physical exam and medical history are all that is needed for a diagnosis. If your doctor suspects another condition or needs to see which nerves are affected, he or she may order one or more of the following tests.

Imaging tests

• X-rays. Plain X-rays don't detect herniated disks, but they can rule out other causes of back pain, such as an infection, tumor, spinal alignment issues, or a broken bone.
• CT scan. A CT scanner takes a series of X-rays from different directions and then combines them to create cross-sectional images of the spinal column and the structures around it.
• MRI. Radio waves and a strong magnetic field are used to create images of the body's internal structures. This test can be used to confirm the location of the herniated disk and to see which nerves are affected.
• Myelogram. A dye is injected into the spinal fluid before a CT scan is taken. This test can show pressure on the spinal cord or nerves due to multiple herniated disks or other conditions.

Nerve tests

Electromyograms and nerve conduction studies measure how well electrical impulses are moving along nerve tissue. This can help pinpoint the location of nerve damage.

• Nerve conduction study. This test measures electrical nerve impulses and functioning in the muscles and nerves through electrodes placed on the skin. The study measures the electrical impulses in nerve signals when a small current passes through the nerve.
• Electromyography (EMG). During an EMG, a doctor inserts a needle electrode through the skin into various muscles. The test evaluates the electrical activity of muscles when contracted and when at rest.

 

Treatment of Herniated Disk

Conservative treatment — mainly modifying activities to avoid movement that causes pain and taking pain medication — relieves symptoms in most people within a few days or weeks.

Medications of Herniated Disk

• Nonprescription pain medications. If your pain is mild to moderate, your doctor might recommend pain medication available without a prescription, such as acetaminophen (Tylenol, others) ibuprofen (Advil, Motrin IB, others), or naproxen sodium (Aleve).
• Neuropathic drugs. These drugs affect nerve impulses to decrease pain. They include gabapentin (Gralise, Horizant, Neurontin), pregabalin (Lyrica), duloxetine (Cymbalta, Drizalma Sprinkle), or venlafaxine (Effexor XR).
• Muscle relaxers. You might be prescribed these if you have muscle spasms. Sedation and dizziness are common side effects.
• Opioids. Because of the side effects of opioids and the potential for addiction, many doctors hesitate to prescribe them for disk herniation. If other medications don't relieve your pain, your doctor might consider short-term use of opioids, such as codeine or an oxycodone-acetaminophen combination (Percocet, Oxycet). Sedation, nausea, confusion, and constipation are possible side effects of these drugs.
• Cortisone injections. If your pain doesn't improve with oral medications, your doctor might recommend a corticosteroid that can be injected into the area around the spinal nerves. Spinal imaging can help guide the needle.

Therapy

Your doctor might suggest physical therapy to help with your pain. Physical therapists can show you positions and exercises designed to minimize the pain of a herniated disk.

Surgery

Few people with herniated disks require surgery. Your doctor might suggest surgery if conservative treatments fail to improve your symptoms after six weeks, especially if you continue to have:

• Poorly controlled pain
• Numbness or weakness
• Difficulty standing or walking
• Loss of bladder or bowel control

In nearly all cases, surgeons can remove just the protruding portion of the disk. Rarely, does the entire disk must be removed. In these cases, the vertebrae might need to be fused with a bone graft.

To allow the process of bone fusion, which takes months, metal hardware is placed in the spine to provide spinal stability. Rarely, your surgeon might suggest the implantation of an artificial disk.

 

Lifestyle and home remedies

Besides taking the pain medications your doctor recommends, try:

• Applying heat or cold. Initially, cold packs can be used to relieve pain and inflammation. After a few days, you might switch to a gentle heat to give relief and comfort.
• Avoiding too much bed rest. Staying in bed can lead to stiff joints and weak muscles — which can complicate your recovery. Instead, rest in a position of comfort for 30 minutes, and then go for a short walk or do some work. Try to avoid activities that worsen your pain.
• Resuming activity slowly. Let your pain guide you in resuming your activities. Make sure your movements are slow and controlled, especially bending forward and lifting.

 

Alternative Medicine of Herniated Disk

Some alternative and complementary medicine treatments might help ease chronic back pain. Examples include:

• Chiropractic. Spinal manipulation has been found to be moderately effective for low back pain that has lasted for at least a month. Rarely, chiropractic treatment of the neck can cause certain types of strokes.
• Acupuncture. Although results are usually modest, acupuncture appears to ease chronic back and neck pain.
• Massage. This hands-on therapy can provide short-term relief to people dealing with chronic low back pain.

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