We distinguish neuropathies based on their pattern. For example, damage to a single nerve is called a mononeuropathy. Damage to multiple nerves is called polyneuropathy. A very common pattern is distal and symmetric. That is, both sides are affected about equally.
Feet are more affected than the thighs.
If the upper extremities are involved, the hands are affected before the upper arms. Other medications include Neurontin, Tegretol, Dilantin. It's a different class of medications. Talk with your doctor about these. As you know, this forum is only for education, and we can't give you actual medical advice.