That would be classified as chronic pain. You can find out more about any clinical trials by digging through the Journavx website (I can’t remember the name of the pharmaceutical company). But it seems they have only been given permission to do clinical trials for diabetic neuropathy at the present.
You could contact the company directly and see what they say. Doesn’t hurt to ask! Just keep searching on Google until you find a way to contact them.
With this neuropathy condition, you have to do a lot of you own research!