Is there any help for phnp?

Definitely try cbd or medical Marijuana, especially if you live in Colorado. I live in a state that medical Marijuana is legal, and I recently have been able to use both the cbd which does not make you high, or the Marijuana too. The cbd comes in different forms, but I use a vape pen. It has helped my pain quite a bit. I also use a topical butter Marijuana in it for my face, which has also helped.
I wish your Mom the best. We all know what she is going through.

Let me know if you have anything that works. My Mom has PHNP for the last year too. Mom has tried just about everything, but nothing has helped. She’s on gabapentin, the drug they give everyone now, but mostly she has to sit around with nothing touching the nerve pain area. She can’t even leave the house half the time! What is wrong with our medical community, allowing our seniors to sit around in intense pain. Disgusting frankly.

See your PCP and ask about amitryptilene (antidepressant).It helps with the stress of dealing with constant pain. If your mom cant take pain meds that might be the next thing to try. Helped my husband finally get some rest at night.