Normally, yes. Catastrophic brain injuries can also result in ADHD. People who develop identical symptoms to ADHD due to stimulus and conditioning do not actual

Normally, yes. Catastrophic brain injuries can also result in ADHD. People who develop identical symptoms to ADHD due to stimulus and conditioning do not actually have ADHD and cannot be treated with medications for ADHD treatment, but otherwise for all practical purposes the real world performance limitations are the same. I call that artificial ADHD.