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What takes priority?
Familiar muscle soreness differs from a sudden change in the leg. Consider severity, progression and associated symptoms.
Seek medical help for significant worsening or uncertainty about an emergency. Do not delay to complete a questionnaire.
Understand the picture
Three levels of action
112 now
Breathlessness, chest pain, a suddenly cold limb or escalating extreme pain.
Same-day advice
New leg swelling, fever with local pain or another concerning change.
Arranged consultation
Persistent limiting pain without urgent signs; reassess if it changes.
When to call 112
Chest pain, sudden breathlessness or collapse with leg symptoms can indicate a clot reaching the lungs. Call 112.
A suddenly cold, pale, very painful, numb or weak limb, or escalating extreme pain with tightness after injury, also needs immediate help.
A newly swollen leg
New one-sided calf or thigh pain or swelling may involve deep vein thrombosis. Warmth and redness may be absent.
Seek same-day assessment, especially after surgery, immobility or prolonged travel. Clots can occur without obvious risk factors. Do not massage the symptoms away.
Pressure or loss of function after injury
Dangerous muscle compartment pressure can threaten nerves and circulation. Escalating severe pain, tightness and altered sensation needs urgent help.
Major weakness, inability to bear weight or inability to straighten the knee after an accident needs prompt assessment. Avoid repeated strength tests.
Unusual pain after exercise
Rhabdomyolysis can cause disproportionate pain, weakness or dark urine and can damage the kidneys.
Seek immediate assessment even without all signs. Normal urine does not exclude it; blood tests may be needed.
Chapter sources [7]
Nerves, fever and other symptoms
New or progressive weakness needs prompt advice. New difficulty passing urine, loss of bowel control or numbness around the genitals or anus needs urgent help, especially with back or leg pain.
Hot, painful, swollen skin on the leg needs same-day assessment, even without fever. Severe illness or rapid deterioration may require 112.
What to report
Describe onset, side, progression, associated symptoms, medicines and recent surgery or immobility. For an emergency call, give your location first.
Follow the instructions. Examination, vein ultrasound, blood tests or other imaging may be appropriate; no single investigation suits every pain.
In everyday life
A swollen leg after immobility
Do not assume cramp
The situation needs medical assessment.
Seek same-day advice
Do not wait for the next physiotherapy session.
112 for breathing symptoms
Do not travel alone if breathless or faint.
Why home tests are insufficient
Walking, stretching the calf or having no redness cannot exclude thrombosis. A questionnaire or body map cannot replace necessary investigations.
The contact form and KinéCheck are not emergency services. Persistent limiting pain without emergency signs still deserves an arranged consultation.
Chapter sources [5]
Your questions
Can I test for thrombosis at home?
No. Symptoms and home tests cannot rule it out. A clinician decides which investigations are needed.
Chapter sources [5]
What if the leg is not red?
A clot can occur without redness. New unexplained pain, particularly with swelling or risk factors, needs prompt advice.
Chapter sources [1]
Should I wait for dark urine?
No. Exceptional muscle pain or marked weakness may already need immediate assessment.
Chapter sources [7]
Can I leave the practice a message in an emergency?
Do not rely on a callback. Call 112 or immediately follow the appropriate medical route.
Chapter sources [4]
Sources and references
- [1] NHS: DVT (deep vein thrombosis)
- [2] NHS: Compartment syndrome
- [3] NHS: Peripheral arterial disease (PAD)
- [4] CGDIS: Appeler le 112
- [5] NICE NG158: Venous thromboembolic diseases, recommendations
- [6] AAOS OrthoInfo: Muscle Strains in the Thigh
- [7] CDC/NIOSH: Signs and Symptoms of Rhabdomyolysis
- [8] NHS — Back pain: urgent neurological symptoms
- [9] NHS: Cellulitis
Text updated on
Medical review: awaiting Hasib Selimovic.