I understand your concern.
Well as you describe,it seems that Lumbar radiculopathy can be a possibility.
Nerve root compression of lumbar nerves or sacral nerves can cause such intermittent burning,numbness on affected areas at certain positions.
You need to undergo X-ray/MRI of Lumbosacral spine to rule out the possible cause.
The line of treatment may include
Nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen
Physical therapy like deep heat ,traction ,interferential therapy.
Leg stretching can be helpful.
I suggest you to consult your nearby Orthopedist for further evaluation and management.
I hope this helps.
Use reply to let me know if you have further queries.
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