Reply To: Could I possibly have ADHD? Home › Welcome to the ADDitude Forums › For Teens and Young Adults with ADHD › Could I possibly have ADHD? › Reply To: Could I possibly have ADHD? September 30, 2020 at 1:07 am #184580 phantasmParticipant Yes I agree. It is okay to self check through a checklist for possible identifiers and be confirmed by a professional therapist. How are you doing now?