Hi Healthgirl,
I have Lidocaine Infusions for severe Neurological Hypersensitivity - including a burning sensation, especially in my legs - every 4 weeks.

When I had 2nd degree burns between my legs and round the "front", viscous Lidocaine was a numbing lifesaver. There are many Members here whose Posts indicate success of their Lidocaine patches.

I say, "Go for it!", but be careful to follow the instructions you are given carefully. On 2 respected Medical Advice sites one states to rub the cream in and leave it uncovered, the other states to leave it in a thick layer on the surface and cover with gauze, then wash off after a set time. Pay heed to your prescribing Doctor.

Dave.