You get out of the car, and a pain shoots from your buttock down the back of your thigh to your calf. Coughing makes it worse. Often, the back itself hurts less than the leg. In everyday terms, this is sciatica; doctors refer to it as lumbar radiculopathy: A nerve root in the lower spine is irritated or compressed. Here’s how to recognize nerve pain, what helps in the first weeks, and which signs mean you should not waste any time – written for anyone currently sitting on the sofa with a pulling leg.
The Pain is in the Leg, the Cause is in the Back
The sciatic nerve is the thickest nerve in the body. It consists of several nerve roots that exit the spinal canal in the lower part of the spine and then run through the buttock down to the foot. When one of these roots is compressed, the brain registers the pain where the root sends its fibers. So, in the leg.
Most commonly, a herniated disc presses on the root. In older individuals, bony constrictions can also develop over years due to wear and tear. Mechanical pressure is only part of the explanation: The protruded disc material causes inflammation around the nerve root, which accounts for a significant portion of the pain. This explains why symptoms can diminish even though the herniation is still visible on a later scan.
Sciatica or “Just” Back Pain? Three Indicators
Even ordinary back pain can radiate into the buttock and thigh. They rarely extend below the knee. The following characteristics suggest an irritated nerve root:
- The pain follows a strip – for example, over the outside of the lower leg to the top of the foot or over the calf to the outer edge of the foot. Many can trace it with a finger.
- Tingling, “pins and needles,” or a numb feeling in the same strip.
- Coughing, sneezing, and straining intensify the pulling in the leg because the pressure in the spinal canal increases.
A dull, broad pain that improves with movement and ends above the knee is more typical of non-specific back pain, such as a lumbago. A clear distinction can only be made during an examination.
When You Should See a Doctor Immediately
Pain alone is uncomfortable but not an emergency. It becomes dangerous when the nerve stops functioning. Call emergency services at 112 or go to an emergency room if you experience these signs:
- Numbness in the anus, genitals, or the inner thighs, that is, where one sits on a saddle;
- Inability to hold urine or empty the bladder, stool passes unnoticed;
- A sudden paralysis: The foot drags while walking, you cannot stand on your toes or heels, the knee buckles;
- Symptoms in both legs simultaneously with increasing weakness.
The first two points may indicate cauda syndrome, where the nerve bundle at the end of the spinal canal is compressed. Here, hours count.
A different, deceptive course is when the pain suddenly decreases while the leg becomes weaker. This can mean that the nerve root is giving up. Even then, you should see a doctor the same day. You should also seek prompt evaluation for pain accompanied by fever, after a fall, or with a history of cancer.
What Happens in Practice
The examination lasts only a few minutes and requires no equipment. The doctor lifts your extended leg while you lie on your back; if the familiar pain shoots into the leg, this indicates an irritated root. He checks reflexes at the knee and Achilles tendon, has you walk on your toes and heels, and tests whether you feel touches on both legs equally. From this pattern, it is often possible to determine which root is affected.
An MRI is usually not necessary on the first day. The neurological guidelines for lumbar radiculopathy recommend imaging when there are signs of paralysis or other warning signs, when symptoms do not improve despite treatment over weeks, or when surgery is being considered. The reason for this caution: Herniated discs are also found in many people without any complaints. An image only proves something if it corresponds to the examination findings.
The First Weeks: Patience with a Program
Most herniated discs with nerve pain are treated without surgery. The body often breaks down protruded tissue on its own, and the inflammation subsides. This takes weeks. Not days.
What the guidelines recommend for this time:
- Stay active as much as the pain allows. Bed rest offers no advantage over normal daily activities. Short walks, repeated frequently, are better than a long march.
- Pain relief medication to make movement possible. Which medication and for how long is determined by the doctor, also considering the stomach, kidneys, and other medications.
- Physical therapy as soon as the worst pain subsides. It helps to abandon protective postures and rebuild the core muscles.
- In cases of very severe pain, injections with anti-inflammatory agents near the nerve root may be considered. A specialist decides this on a case-by-case basis.
Many find a position that relieves the leg: lying on your back, with the lower legs at a right angle on a stool or pillow stack. This elevated position is helpful as a break. Spending the day in it is not.
During this time, monitor your strength. A simple test for home: once a day, take a few steps on your toes and heels. If it’s harder on one side than yesterday, don’t wait for the next check-up.
When Surgery is Considered
In cases of cauda syndrome and severe or rapidly increasing paralysis, surgery is urgently needed to save the nerve. There is no discussion about this.
The situation is more complicated when “only” the pain remains. If symptoms do not improve despite consistent treatment over several weeks and the MRI matches the findings, surgery may be an option. It often alleviates leg pain more quickly; in the long term, the results of operated and non-operated patients converge in studies. Therefore, it is a consideration that you should make together with your doctor: How much does the pain restrict your life, how long can and do you want to wait? Seeking a second opinion before a planned spinal procedure is common and sensible.
When the Leg Cooperates Again
Tingling often lasts longer than the pain. Nerves recover slowly; a numb spot on the foot may remain for months while everything else is functioning again. Mention it during your follow-up, but don’t be alarmed by it.
For the time afterward, the same applies as with any back pain: The back needs muscles, and muscles need regular load. Simple exercises to get started can be done at home. Lifting and carrying are not prohibited. Gradually increase the load and keep it close to your body.
Frequently Asked Questions
How long does sciatica last?
In most cases, leg pain improves significantly within a few weeks. There is no fixed timeline. If the pain does not subside after six to eight weeks of treatment, a reassessment is usually made, often with an MRI.
Heat or Cold?
Whatever feels good to you. Heat relaxes the tense back muscles and is often perceived as pleasant. Neither changes the underlying cause.
Can I drive with sciatica?
Prolonged sitting exacerbates symptoms for many. The key to safety is the strength in the foot: If you cannot reliably press the pedal or are taking pain medication that makes you drowsy, do not drive. Ask your doctor if in doubt.
Is it always the disc?
No. Constrictions due to wear and tear, and rarely inflammation or other conditions, can irritate a nerve root. The hip joint and sacroiliac joint can also send pain into the leg that resembles sciatica. Sorting this out is the task of the examination.
Read Also
- Lumbago: What Helps in the First Days
- MRI for Back Pain: When Imaging is Useful
- Movement Instead of Bed Rest: Exercises for Back Pain
This article is for informational purposes only and does not replace medical advice.
Sources
- Glocker F. X. et al. Lumbar Radiculopathy, S2k Guidelines. German Society for Neurology (Ed.), Guidelines for Diagnostics and Therapy in Neurology. 2018. AWMF Register No. 030/058.
- German Society for Orthopedics and Orthopedic Surgery (DGOOC) et al. S2k Guidelines for Conservative, Surgical, and Rehabilitative Care in Herniated Discs with Radicular Symptoms. 2021. AWMF Register No. 033-048.
- Federal Chamber of Physicians (BÄK), National Association of Statutory Health Insurance Physicians (KBV), Working Group of Scientific Medical Societies (AWMF). National Guideline for Non-specific Back Pain – Long Version, 2nd Edition. 2017. AWMF Register No. nvl-007.