Sciatica vs. Piriformis Syndrome: How Can You Tell the Difference?
Pain that starts in the buttock and travels down the leg is often called “sciatica.” But sometimes patients are told that their symptoms are coming from the piriformis muscle instead.
So how do you tell the difference between sciatica and piriformis syndrome?
The answer isn't always straightforward. Both conditions can cause buttock pain, leg pain, tingling, and other symptoms that follow the path of the sciatic nerve. However, the source of the nerve irritation is different.
Importantly, not every case of pain in the buttock is caused by the piriformis muscle. A problem originating in the lumbar spine—particularly a disc herniation or other condition affecting a spinal nerve—is an important cause to evaluate first.
What Is Sciatica?
Sciatica describes pain and other symptoms that occur when the sciatic nerve or its nerve roots are irritated.
The sciatic nerve is formed by several nerve roots that originate in the lower spine. When one of these nerve roots becomes irritated, symptoms can travel from the lower back or buttock into the thigh, calf, or foot.
Common symptoms of sciatica include:
Sharp or shooting pain
Pain traveling down the leg
Tingling or “pins and needles”
Numbness
Burning sensations
Muscle weakness
Symptoms that worsen with certain movements or positions
One of the most common causes of true spinal sciatica is lumbar disc herniation. A herniated or bulging disc can irritate a nearby nerve root and produce pain or neurological symptoms along the nerve's distribution.
What Is Piriformis Syndrome?
The piriformis is a small muscle located deep in the buttock. The sciatic nerve passes very close to this muscle, and in some people, the nerve can become irritated in this region.
Piriformis syndrome refers to symptoms attributed to irritation or entrapment of the sciatic nerve around the piriformis muscle.
It can cause:
Deep buttock pain
Pain that may extend down the back of the thigh
Tingling or numbness
Pain with prolonged sitting
Tenderness in the buttock
Symptoms that may worsen with certain hip movements
Piriformis syndrome is considered a sciatica mimic, meaning it can produce symptoms that resemble sciatica originating from the lumbar spine. Because of this overlap, determining the actual source of the symptoms is important.
Is Piriformis Syndrome Overdiagnosed?
Piriformis syndrome is a real condition, but it can be tempting to blame the piriformis muscle whenever someone has buttock or leg pain.
The problem is that symptoms alone cannot reliably establish that the piriformis is responsible.
According to recommendations from the World Federation of Neurosurgical Societies Spine Committee, piriformis syndrome is a clinical diagnosis made after other pain syndromes have been considered or excluded. The committee also notes that specific clinical examination findings can help support the diagnosis.
This is important because lumbar spine problems are the most common causes of sciatic-type symptoms.
If a patient has pain traveling from the low back or buttock down the leg, particularly when accompanied by numbness, tingling, or weakness, the lumbar spine should be carefully evaluated before assuming that the piriformis is the problem.
Why Disc Herniations Are Important to Consider
One reason we don't want to automatically label buttock and leg pain as piriformis syndrome is that disc-related problems can produce very similar symptoms.
The discs between the vertebrae help absorb forces throughout the spine. When a disc becomes damaged or herniated, it can irritate a nearby nerve root.
That irritation can result in radicular pain, commonly referred to as sciatica when it affects the sciatic nerve distribution.
For some patients, the primary complaint may not even be back pain. They may primarily notice pain, tingling, or numbness in the leg.
This is why evaluating the lumbar spine can be an important part of determining the source of sciatic symptoms.
How Is the Difference Diagnosed?
There isn't one single test that can identify every case of sciatica or piriformis syndrome.
A thorough evaluation may include:
Reviewing your symptoms and medical history
Evaluating where the pain begins and where it travels
Testing spinal movement
Evaluating muscle strength and sensation
Checking reflexes when appropriate
Performing orthopedic and neurological tests
Evaluating the hip and surrounding muscles
Reviewing imaging when clinically indicated
When piriformis syndrome is suspected, specific examination maneuvers that stress or contract the piriformis can provide additional information. The WFNS recommendations note that piriformis syndrome should be diagnosed clinically after other causes have been considered.
How Can Cox Technic Help Sciatica From a Disc Problem?
When sciatic symptoms are coming from the lumbar spine, particularly when a disc-related condition is involved, Cox Technic Flexion-Distraction may be an appropriate conservative treatment option for some patients.
Cox Technic uses controlled flexion and distraction of the spine with the goal of reducing mechanical stress and improving spinal motion.
Research into Cox Technic has examined its biomechanical effects on the lumbar spine, including reductions in intradiscal pressure during flexion-distraction.
Clinical research has also found that patients with low back pain and radiculopathy experienced better outcomes with flexion-distraction than physical therapy.
The goal is not simply to treat the symptom in the buttock or leg. Instead, treatment focuses on identifying and addressing the underlying spinal condition contributing to the nerve irritation.
When Should You Have Sciatic Pain Evaluated?
Consider an evaluation if you have:
Pain traveling from your back or buttock into your leg
Persistent numbness or tingling
Burning or shooting leg pain
Symptoms that interfere with sleep or daily activities
Recurrent episodes of sciatica
Leg or foot weakness
Symptoms that aren't improving with normal activity modification
Severe or progressive weakness, significant loss of sensation, or new bowel or bladder dysfunction requires prompt medical evaluation.
Chiropractic Care for Sciatica in Brea
At Tenckhoff Chiropractic in Brea, we don't assume that every case of buttock or leg pain has the same cause.
Our approach begins with an examination designed to determine whether symptoms are more consistent with a lumbar spine problem, a muscular condition, or another source.
For appropriate patients with lumbar disc-related conditions and sciatica, Cox Technic Flexion-Distraction provides a gentle, conservative approach focused on the lumbar spine.
If you're experiencing sciatica or persistent pain traveling into your leg, an accurate diagnosis is the first step toward choosing the right treatment.
Contact Tenckhoff Chiropractic in Brea to schedule an evaluation and find out what may be contributing to your symptoms.
