The condition that causes people to get lost in their own home

For some individuals, the unsettling feeling of being lost does not subside, even when navigating their own homes. This condition, known as developmental topographical disorientation (DTD), is described as a lifelong inability to orient oneself, affecting an estimated one in 30 people.

Individuals with DTD report getting lost multiple times a week since childhood. Crucially, this disorientation is not a result of brain injury, neurological disease, or psychiatric conditions. Instead, researchers believe it stems from a fundamental difference in how their internal navigation system has always operated.

Early research focused on severe cases, but it's now understood that DTD exists on a spectrum. Milder forms might go unnoticed, often dismissed as simply having "bad directions." However, the broadness of the DTD label has made precise understanding and support challenging.

To address this, researchers are working to disentangle various navigation impairments. They are focusing on a specific subgroup of people with DTD who lack a "cognitive map", the mental representation of landmarks and their relationships that most people use to navigate. This subgroup, proposed to be termed "atopia," can recognize landmarks but struggles to form a cohesive mental layout of their environment.