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A discogram is a test in which contrast dye is injected into a disk in the spine. Contrast dye is a type of fluid that shows up on X-ray. This lets a radiologist see if the disk is normal or not. The test may help find which disk is causing your back or leg pain. The test is often done when certain treatments for pain, such as surgery, are being considered. As part of the test, an image of the disk is taken. This image shows where and how the disk is damaged.
Every procedure has risks. Your health care provider will discuss them with you. Some possible risks of a discogram include:
Spinal fluid leak
For your safety and the success of your test, tell your health care provider if you:
Are pregnant or think you may be pregnant
Have any bleeding problems
Take blood thinners (anticoagulants) or other medicines, including aspirin, herbs, or vitamin supplements
Have any allergies
Have recently been sick or have any chronic conditions
Prepare for your test as instructed. Be sure that you:
Stop taking medicines, herbs, and supplements before the test as advised by your health care provider.
Follow any directions you’re given for not eating or drinking before the test.
Arrange for someone to drive you home after the test.
Allow plenty of time before your appointment to check in. You will need to sign a form stating that the test has been explained to you. If you have questions, ask them before you sign the form. Your visit may last several hours.
During the test, you will lie on your stomach or your side on an exam table. You may be given medicine through an IV to help you relax. The health care provider cleans your lower back and covers the area with sterile drapes. The area is numbed with medication. A needle is placed into each disk being tested. Then a contrast solution is injected into one or more of the disks in your spine. A picture of the disk is taken. More than one of your disks may be tested. This is so the results of the 2 tests can be compared and help to find the source of your pain.
An injection into a disk does cause pain. But keep in mind that this will help your health care provider diagnose you. He or she will ask how your pain feels, and if it’s like the pain you felt before. The pain may be worse than your usual back pain. Make sure to tell your health care provider how you feel.
You may be given pain medicine after the discogram. You may also have a computed tomography (CT) scan. This imaging test gives more information about the disk. Your health care provider will tell you when you can get the results of your test.
A discogram may be painful. But it can give your health care provider vital information to help plan your treatment.
Have an adult friend or family member drive you home after the test.
Drink plenty of water to help flush the contrast fluid from your body.
Take it easy for the rest of the day, as advised.
Lie down with your head flat if you get a headache.
You may be in more pain than usual for up to 5 days after the discogram. Your health care provider may recommend medicine to help ease the pain. If the increased pain lasts longer than 5 days, tell your health care provider.
Call your health care provider right away if you have:
Worsening pain in your back or legs
Fever of 100.4°F (38°C) or higher
Numbness, tingling, or weakness in your legs
A headache that lasts for 2 days or more
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