What can cause very severe concentration problems other than adhd? my dr says i dont meet the criteria. it started when i was 10 and has gotten much worse. i have severe mdd (with one psychotic depressive episode), mild asd, and anxiety?

A person functions best when they have adequate restorative sleep, good balanced nutrition, are free from physical or mental illness and work in a stable comfortable setting. Having a focus disorder (ADHD) with mental illness is common. Working on the existing issues and making sure all the other factors are at their best is a way to work through this.