Margaret Holloway is 67 years old.
She worked as a district nurse for 31 years in the Midlands.
She knows how bodies work. She knows what nerve damage means.
So when the burning started in her feet four years ago, she knew exactly what she was looking at.
"I went to my GP three times. Each time I came away with either a higher dose of Pregabalin or a new exercise sheet. I knew the exercises would not touch it. I knew the medication was just masking it. But I did not know what else to do. The burning at night was the worst. I would lie there with my feet outside the covers trying to cool them down. My husband started sleeping in the spare room because I was disturbing him so much. I felt embarrassed. Useless. Like my own body had turned against me."
She tried compression socks. She tried a heated foot bath. She tried a cheap TENS machine from a pharmacy.
"They all did something for about ten minutes. Then nothing. I was spending money I did not have on things that did not work."
Her daughter found the Revivo online.
Margaret was not hopeful.
"I have been a nurse. I am not easily fooled. My first thought was that it was another gimmick."
She tried it anyway.
"The first session I could feel it was different. The pulse was deeper than anything I had felt before. Not uncomfortable. Just different. Like it was actually reaching something."
By week two, she was sleeping through until 5am without waking.
By week four, the burning had reduced enough that she could keep her feet under the covers again.
By week eight, she walked to the local shops and back for the first time in two years without stopping.
"I told my GP at my next appointment. He was politely sceptical. I showed him my sleep tracker. He had nothing to say. I sleep seven hours now most nights. I walk every morning. My husband is back in our room. I feel like myself again. Not a version of myself defined by what my feet will and will not let me do. Just me."
Margaret Holloway, 67 | Retired District Nurse | Birmingham, UK