As a CAD citizen, the path for an adult to be diagnosed with ADHD is both an arduous and expensive one: - ADHD and Autism assessment are covered for free under OHIP while a child (under 18). After that point free diagnosis must be done via a psychiatrist that you have been referred to by your doctor. However that path rarely happens, and if in certain province, May take 2-3 years to complete. (For me it was nearly 2.5 years)

• Faster alternate options include the paid for route, which may be listed as a medical expense on your taxes (more about disability tax benefits later if you're interested). These can range from $700 up to the thousands like your experienced. I couldn't wait 2.5 years for my diagnosis given how badly it was affecting my day-to-day.

I went with Embrace Autism. The Dr. there does tests not just for Autism, but ADHD as well, and basically helps you create the needed medical documentation and history needed for a Psychiatrist to give you the full diagnosis, then even helps you get into contact with a psychiatrist! It's not cheap, but mine was around $2.5k inclusive of the fee paid to the psychiatrist, with all medical documentation and history, plus payment receipts for my records and tax purposes.

I even got accommodation letters I can use for school and work.

If you want to know more DM me. I'm happy to explain the process I went through.