For the best part of two and a half years I've been getting them on my hands and feet. I have no idea why I keep getting them or why they reappear as I have burnt them with nitrogen (once so badly I thought my finger was going to turn black!)

I can't keep burning my hands for obvious reasons so has anyone got an alternative preventative treatment. I found Thuja tinture which can be taken internally and is meant to prevent them, but any ideas would be great.

This board usually has all answers so I await patiently!