Sciatica and Back Pain: How to Tell the Difference
“I have sciatica.”
This is one of the most common things I hear when someone comes into the clinic with lower back pain.
Sciatica is often used as a general term for back pain that travels into the leg. It is also commonly described as a “pinched nerve,” and this explanation is often passed along by healthcare professionals, family members, friends and social media.
But not all back pain that travels into the leg is sciatica, and not all leg pain means that a nerve is being compressed.
Understanding the difference between different types of back pain can help set realistic expectations for recovery, determine what type of treatment is appropriate, and identify when further medical assessment may be necessary.
In practice, I find it helpful to classify back pain into four broad categories based on how it presents and how we would approach treatment.
What Is Sciatica?
The term sciatica is generally used to describe pain that travels along the pathway of the sciatic nerve, usually from the lower back or buttock into the leg.
People often describe this pain as sharp, shooting, burning or electric. It can sometimes be accompanied by numbness or tingling.
However, experiencing pain in the leg does not automatically mean that you have a “pinched nerve.”
There are several different ways that pain can travel from the lower back into the leg, and distinguishing between them is an important part of a physiotherapy assessment.
Not All Leg Pain Is Sciatica
Pain from the lower back can sometimes be felt in the buttock, thigh or leg even when there is no significant nerve compression.
This is often referred to as referred pain. The nervous system can cause pain to be experienced away from the original source, which means that the location of your pain doesn't always tell us exactly where the problem is coming from.
On the other hand, irritation of a nerve root can produce a very different pattern of symptoms, sometimes accompanied by changes in strength, sensation or reflexes.
This is why an assessment involves more than simply asking, “Does your pain go down your leg?”
We also look at the pattern of your symptoms, neurological function, movement, strength and other factors to determine what may be contributing to your pain.
4 Common Presentations of Back Pain
1. Serious Medical Conditions
Most back pain is not caused by a serious medical condition. However, in a small percentage of cases, back pain can be related to an underlying problem such as a fracture, infection, cancer or significant neurological compression.
Part of a physiotherapy assessment is therefore screening for red flags that may indicate the need for further medical assessment.
These can include:
Significant trauma or an injury mechanism that could cause a fracture
Fever, chills or feeling systemically unwell
Unexplained weight loss
A history of cancer
Severe or progressively worsening symptoms
New or rapidly worsening weakness
New loss of bladder or bowel control
New numbness around the groin or genital area
Having one of these symptoms does not automatically mean that something serious is wrong. However, the combination of symptoms, your medical history and the results of the physical examination help determine whether further investigation is necessary.
If serious pathology is suspected, the priority is appropriate medical assessment rather than continuing with routine physiotherapy treatment
2. Radiculopathy
Radiculopathy is what many people are referring to when they describe having a “pinched nerve.”
It occurs when a nerve root leaving the spine becomes irritated or compressed enough to affect its normal function. This can happen for a number of reasons, including a disc problem or changes associated with spinal stenosis.
Radiculopathy commonly causes pain that travels down the leg, often below the knee. The pain may feel sharp, shooting, burning or electric.
However, pain alone does not tell us whether a nerve is actually losing function.
One of the most important differences with radiculopathy is the presence of neurological changes.
During an assessment, a physiotherapist may test:
Muscle strength
Sensation
Reflexes
Changes in these areas can increase the likelihood that a nerve root is being affected.
For example, someone may have back pain with pain travelling down their leg along with measurable weakness, altered sensation and/or changes in reflexes. This clinical picture is different from simply having a sore lower back with some generalized pain into the leg.
When significant or progressive neurological changes are present, further medical assessment may be appropriate, and imaging may be considered depending on the clinical findings.
The good news is that most cases of radiculopathy improve without surgery. However, recovery can take time, and expectations should be based on the severity of the symptoms, neurological findings and how the condition changes over time.
How Is Radiculopathy Treated?
Early rehabilitation is generally focused on controlling symptoms while maintaining as much normal movement and activity as possible.
Depending on the individual, this may include:
Temporarily modifying movements that significantly aggravate symptoms
Gentle exercises for the spine and surrounding muscles
Maintaining regular movement throughout the day
Continuing normal activities where possible, with appropriate modifications
Gradually increasing exercise and loading as symptoms improve
Relative rest can sometimes be helpful during an acute flare-up, but prolonged bed rest or avoiding movement altogether can contribute to deconditioning, increased fear of movement and difficulty returning to normal activity.
Recovery times vary considerably. Some people improve relatively quickly, while others may experience symptoms for several months or longer.
3. Radicular Pain
Radicular pain can feel very similar to radiculopathy from the patient's perspective.
Someone may experience sharp, shooting, burning or electric pain travelling down the leg. The pain may follow a relatively specific pathway and can sometimes extend below the knee.
The important distinction is what we find during the neurological examination.
With radiculopathy, there is evidence that the nerve root is not functioning normally—for example, measurable changes in strength, sensation or reflexes.
With radicular pain, the nerve root may be irritated and producing nerve-like pain, but neurological testing remains relatively normal.
Radicular pain can occur when inflammation or other irritation affects a nerve root, often in association with a disc problem. Importantly, this does not necessarily mean that the nerve is being physically compressed or that there is permanent nerve damage.
The management of radicular pain is often similar to radiculopathy: the goal is to reduce symptoms while maintaining movement and gradually returning to normal activity.
In the absence of concerning neurological findings or other red flags, imaging is often not necessary during the early stages of recovery.
4. Non-Specific Back Pain
The majority of back pain falls into the category of non-specific back pain.
The term “non-specific” can be confusing. It does not mean that the pain isn't real or that there isn't a physical reason for your symptoms.
Instead, it means that we cannot reliably identify one specific structure as the source of the pain through physical examination or imaging.
Back pain is a complex experience involving many different tissues and systems, and in many cases it isn't possible—or necessary—to determine whether the pain is specifically coming from a particular muscle, joint, disc or ligament.
Acute Non-Specific Back Pain
Acute back pain can occur after lifting, exercising, bending, twisting, an awkward movement, or sometimes without an obvious cause.
Pain is often concentrated around the lower back and buttock. Some people may also experience pain into the thigh or leg, but this tends to be more diffuse and less clearly defined than the pain associated with radicular pain or radiculopathy.
Pain typically does not follow a specific nerve pathway or consistently travel below the knee.
Neurological testing is usually normal, although pain and muscle inhibition can sometimes temporarily reduce strength.
For most acute episodes, significant improvement is expected over the first several weeks. Many people recover within 6–12 weeks, although symptoms can sometimes persist longer.
Importantly, the amount of pain someone experiences does not necessarily tell us how much damage has occurred.
Pain can sometimes remain after the original tissues have healed because the nervous system can become more sensitive following an injury.
Persistent or Chronic Non-Specific Back Pain
When back pain persists beyond the expected timeframe for normal tissue healing, we often describe it as persistent or chronic back pain.
At this point, the factors contributing to someone's pain can become more complex.
The original injury may no longer be the only factor influencing symptoms. The nervous system can become more sensitive, and factors such as sleep, stress, physical activity, previous experiences with pain, fear of movement and changes in mood can all influence how sensitive the body becomes to pain.
This does not mean that the pain is “all in your head.”
The pain is real. It simply means that pain is influenced by more than just the condition of the tissues in your back.
How Is Chronic Back Pain Treated?
Treatment for persistent back pain often involves identifying the factors that are contributing to the problem and gradually addressing them.
This may include:
Strength and conditioning exercises
Gradually increasing spinal loading
Working on movements that have become painful or avoided
Education about pain and the nervous system
Improving general physical activity
Gradually returning to activities that are meaningful to you
Addressing fear or anxiety surrounding movement when these are contributing to disability
A common approach is graded exposure—gradually reintroducing movements or activities that have become threatening or painful in a controlled and manageable way.
The goal isn't simply to eliminate every sensation of pain before returning to activity. Instead, the goal is to build confidence and capacity so that your back becomes more tolerant of the activities you want and need to do.
How Is Back Pain Treated?
There isn't one treatment that works for every type of back pain.
The appropriate approach depends on the individual's symptoms, examination findings, goals and stage of recovery.
For many people, treatment involves some combination of:
Education about their condition and pain
Exercise and strengthening
Gradual exposure to movements or activities that have become difficult
Maintaining normal activity where possible
Temporary modification of aggravating activities
Manual therapy when appropriate
Developing strategies for managing flare-ups
Gradually returning to work, sport and other meaningful activities
The goal of physiotherapy isn't simply to make your back feel better temporarily. It is to help you understand your symptoms, improve your physical capacity and regain confidence in your body.
When Should You See a Physiotherapist for Back Pain?
You don't need to wait until your back pain becomes severe before seeking help.
A physiotherapy assessment can be useful if:
Your back pain is interfering with work, exercise or daily activities
Pain is travelling into your buttock or leg
You are unsure whether you have sciatica
You are worried about moving or exercising because of your back
Your symptoms keep returning
Your back pain has persisted for several weeks
You want help safely returning to sport or exercise
A physiotherapist can assess your symptoms and determine whether they appear appropriate for physiotherapy or whether further medical assessment is warranted.
Frequently Asked Questions About Sciatica
Does sciatica always mean that I have a pinched nerve?
No. The term sciatica is often used to describe pain travelling down the leg, but leg pain does not necessarily mean that a nerve is being compressed. A neurological examination can help determine whether there is evidence of nerve-root dysfunction.
How long does sciatica take to heal?
Recovery varies depending on the cause and severity of the symptoms. Many people improve significantly over the first several weeks, while more significant nerve-related symptoms can take several months or longer to fully settle.
Do I need an MRI for sciatica?
Not necessarily. Imaging is generally considered when the results are likely to change management, or when there are concerning symptoms or neurological findings. Your symptoms and physical examination are often more useful than imaging alone when determining the appropriate treatment.
Should I rest if I have back pain?
Short periods of relative rest can be helpful when symptoms are severe, but prolonged inactivity is generally not recommended. Maintaining comfortable movement and gradually returning to normal activities is usually an important part of recovery.
Can physiotherapy help sciatica?
Yes. Physiotherapy can help with many presentations of back and leg pain. Treatment may involve education, exercise, activity modification and strategies to gradually restore movement and strength. When neurological changes are present, your physiotherapist can also help determine whether further medical assessment is appropriate.
The Bottom Line: Do You Actually Have Sciatica?
Back pain does not automatically mean you have sciatica, and pain travelling into the leg does not necessarily mean that a nerve is being “pinched.”
For most people, back pain does not mean that their spine is damaged or that they need to avoid movement. With the right approach, gradually returning to normal movement, exercise and meaningful activities is an important part of recovery.
If you are experiencing back pain—especially pain that travels into your leg—you don't necessarily need to know whether you have “sciatica” before seeking help.
That's part of what the assessment is for.
Physiotherapy for Back Pain in Winnipeg
If you're dealing with lower back pain, sciatica or pain travelling into your leg, a physiotherapy assessment can help determine what may be contributing to your symptoms and what approach is most appropriate for you.
Book an assessment with Kieran Beveridge Physiotherapy in Winnipeg to get started.
