Getting Evaluated…

Im 17, and I had an appointment made with my clinics psychiatrist. Turns out I don’t think he can actually prescribe me medication, only diagnose, so I don’t know how much longer the process of getting diagnosed and medicated is going to take. Not sure if I should just stick with it or try and go to a private practitioner since I feel like the process might be more straightforward.

Also, when I get evaluated, should I mention that I vape nicotine? I’ve heard that people with ADHD tend to use it more/be addicted more, but I don’t know if it will help or hurt my case, especially since I’m not an adult yet. What should I do ?