Marlene

Marlene, 33, who declined to give her last name, is also uncertain.

Marlene, 35, is among the estimated one-in-five people in Scotland living with chronic pain, with standard painkillers often seen as ineffective.

Marlene, who lives in Aberdeen, described the findings as "amazing", as she said it validated an illness that many people did not understand, and offered hope for the future.

Marlene, who works in marketing, lives with her partner Mark and their springer spaniels Spock and Cheese.

"I know that there's nothing that can be done right now to help the pain, and at the moment it's showing how they can stop the pain from happening in the first place," Marlene explained.