It's hard enough to navigate mental health diagnoses such as anxiety, depression or attention deficit hyperactivity disorder (ADHD), but what happens when you can't tell them apart?

Having several mental health comorbidities—or the presence of simultaneous conditions—is surprisingly common. Epidemiological studies indicate people struggling with mental health symptoms frequently develop other types of mental health disorders throughout their life.

This could be due to so-called bridge symptoms shared by two different psychological disorders, which can eventually overlap and activate new symptoms or patterning (like a person whose depression blurs over into worry, thus leading to increased anxiety-like symptoms). Or, comorbidity might exist when the symptoms of one mental state eclipse another set of symptoms, such as a person's learning disability going unnoticed because