The term “marked” has a special meaning in disability claims based on mental illness. You may see the term “marked” used to describe the effects of the mental illness on your activities of daily living. Example: “a marked limitation of the claimant’s activities of daily living.”
“Marked” is nothing more than a description of how bad the illness effects your daily activities. It means more than moderate, but less than extreme. Stated another way, “marked” means that your illness has a more than moderate, but less than extreme, effect on your daily activities.
While this may seem a bit complicated, it’s really not. If you can thoroughly document and recall the difficulties you have with your daily tasks, you can most likely demonstrate that your illness has caused a “marked limitation” on your activities of daily living.