When you’re in pain, it’s natural to want relief as quickly as possible. For many musculoskeletal issues, physiotherapy is a safe, effective first step. In fact, physios are highly trained to assess, diagnose, and manage a wide range of conditions without the need for scans, medications, or specialist referrals.
However, there are times when your symptoms may signal something more serious. In these cases, your GP should be your first stop.
Understanding the difference between a routine injury and a potential medical red flag can help you get the right care at the right time.
Below are six red flags that mean you should see your GP first.
1. Unexplained Weight Loss
If you’ve lost a noticeable amount of weight without trying – especially alongside persistent pain – it’s important to get this checked by your GP.
Unintentional weight loss can sometimes be linked to systemic conditions such as infection, inflammatory disorders, or more serious medical illnesses. While most back or neck pain is mechanical (related to joints, muscles, or nerves), unexplained weight loss is not typical of a simple strain.
If you’re experiencing ongoing pain and your clothes are suddenly looser without changes to diet or exercise, book in with your GP for further assessment.
2. Persistent Night Pain That Doesn’t Change With Position
Many people with back or neck pain notice discomfort at night. That alone isn’t necessarily concerning.
What is a red flag is deep, constant pain that doesn’t ease with movement or position changes and regularly wakes you from sleep.
Mechanical pain (like a muscle strain) usually improves or shifts when you change position. Pain that remains intense and unrelenting regardless of posture may indicate something that requires medical investigation.
If night pain is severe, worsening, or paired with other unusual symptoms, see your GP first.
3. Loss of Bladder or Bowel Control
This is a medical emergency.
If you experience:
- New loss of bladder or bowel control
- Numbness around the groin or saddle area
- Rapidly worsening weakness in the legs
You must seek urgent medical attention immediately.
These symptoms can indicate serious nerve compression (such as cauda equina syndrome) and require immediate hospital assessment. Do not wait for a physio appointment.
4. Fever, Chills, or Signs of Infection
Musculoskeletal pain combined with:
- Fever
- Chills
- Feeling generally unwell
- Recent infection
- Recent surgery
could indicate something beyond a simple strain.
Spinal or joint infections are rare, but they are serious and require prompt medical treatment. If you feel systemically unwell alongside pain, your GP should assess you first.
5. Significant Trauma
If you’ve had a major accident – such as:
- A car accident
- A high fall
- A direct blow to the spine or head
– it’s best to seek medical assessment before starting physiotherapy.
Even in older adults, what seems like a “minor fall” can result in fractures, particularly if bone density is reduced.
Your GP may arrange imaging or refer you for further investigation to rule out structural injury before conservative treatment begins.
6. Progressive Neurological Symptoms
Pins and needles or mild numbness can occur with nerve irritation and are often manageable with physiotherapy.
However, you should see your GP first if you notice:
- Rapidly worsening weakness
- Increasing numbness
- Loss of coordination
- Difficulty walking
- Changes in speech or vision
Progressive neurological symptoms require medical evaluation to determine the cause and ensure safe management.
Why This Matters
t’s important to remember: red flags are rare.
The vast majority of back pain, neck pain, shoulder pain, and sports injuries are not dangerous and respond well to physiotherapy. In fact, early movement and guided rehabilitation are often the most effective treatments.
Physiotherapists are trained to screen for red flags during your initial assessment. If we identify anything concerning, we’ll refer you back to your GP promptly. Your safety always comes first.
When Physiotherapy Is the Right First Step
If your pain:
- Started gradually or after a clear mechanical trigger
- Improves (even slightly) with movement
- Changes with posture
- Isn’t associated with systemic symptoms
then physiotherapy is usually an appropriate first point of care.
Common examples include:
- Lower back strains
- Neck stiffness from desk work
- Shoulder pain from lifting
- Sporting injuries
- Tendon irritation
- Mild nerve-related symptoms
In these cases, early assessment can:
- Reduce pain
- Improve movement
- Prevent the issue becoming chronic
- Help you return to work, sport, or daily activities sooner
The Right Care, At The Right Time
Healthcare works best when the right professional is involved at the right stage.
Seeing your GP first when red flags are present ensures serious causes are ruled out. Once cleared, physiotherapy often plays a crucial role in rehabilitation, strength building, and restoring confidence in movement.
If you’re unsure whether your symptoms are a red flag, that’s okay. It’s better to ask than to guess.
At our clinic, we take thorough histories, screen carefully, and collaborate with local GPs when needed. If physiotherapy is appropriate, we’ll guide you with a personalised treatment plan. If medical input is required, we’ll help you navigate that next step.
Not Sure What To Do Next?
If you’re experiencing pain but don’t have any of the red flags listed above, booking an assessment with a physiotherapist is often the most proactive step you can take.
Early intervention can prevent small issues from becoming long-term problems.
If you do recognise one of the warning signs in this article, make an appointment with your GP promptly. Once you’ve been medically cleared, we’re here to support your recovery and help you move forward with confidence.
👉 Ready to take the next step? Book an appointment at the clinic and let’s create a plan tailored to you.
Your health deserves the right attention – at the right time.
