The Mirror Box is a therapeutic tool used primarily in the treatment of phantom limb pain and various psychological conditions, including body dysmorphic disorder. It consists of a box with two mirrors placed at a 45-degree angle, allowing the user to see a reflection of their intact limb while hiding the affected limb from view.

In practice, the Mirror Box is used to create the illusion that the missing or painful limb is still present and functioning normally. When the user moves their intact limb, they observe its reflection in the mirror, which gives the brain the false impression that the missing limb is also moving, thereby helping to alleviate the discomfort associated with phantom sensations. This technique is grounded in the principles of neuroplasticity, where the brain’s perception of body ownership can be altered through visual feedback.

For example, a person who has lost a leg may experience painful sensations in the area where the limb once was. By using the Mirror Box, they can perform exercises that visually stimulate the brain’s representation of the missing limb, potentially reducing pain and helping to rewire the brain’s mapping of body parts.