Source: Additudemag.com and ADD.org
The symptoms checker below will check for many possibly associated conditions along with ADHD.
For clarity, there are many co-occurring disorders that come with ADHD, the link above will ask you about the most prevalent, and list, in order, what you may have.
The Adult ADHD Test below is from ADD.org, also known as ADDA, this is a check for ADHD alone.
NEITHER OF THESE CAN BE USED AS A MEANS OF SELF-DIAGNOSIS. You must see a licensed professional (we always recommend a psychiatrist (make sure they believe in ADHD) as they have the most up to date knowledge on treatment options) For a little more clarity, you don’t have to take medications just because a psychiatrist recommends some, but psychiatrists tend to be the best at diagnosing; Psychiatrists or Pediatricians.