Everyone has ADHD and OCD

Venting. At my workplace I'm the new hire and training/shadowing each coworker in our department.

It's a very detailed focused position. However, I got annoyed when one coworker said they went to a concert. They did MJ there and had memory issues. Didn't miss a beat and said they must have ADHD as they forget these detail focused steps at work all the time. It went into a circle of each coworker saying they had OCD or ADHD depending on the tasks.

I did ask open and nonchalant, meaning directed at no one specific. What were the steps or costs to get diagnosed with OCD or ADHD? All of them said they self diagnosed.

When has this become the norm? I mean the age range is from 26-45.