Given the symptoms you reported (pain in both legs, feelings of pins and needles or burning only when pressure is put on the skin), it is possible that you might be experiencing sciatica.
Sciatica is a set of symptoms that occur when pressure is put on one of the five roots of the sciatic nerve or on the nerve itself. The pain is felt along the nerve, although the pressure is only on a particular point of the nerve. The pressure might be caused by spinal disc herniation, misalignment of the vertebrae (spondylolisthesis), or spinal stenosis.
You might want to visit an orthopedist or a neurosurgeon. A physical examination, visualizing methods such as CT or MRI, and MR neurography might be needed for a definitive diagnosis. Depending on the underlying cause, non-steroidal anti-inflammatory medications, physical therapy, non-surgical spinal decompression, or surgery might be recommended.
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