Yes, airline pilots can have ADHD/ADD, but the process for medical certification is extremely rigorous and managed on a "case-by-case" basis by the FAA (in the US) or CAA (in the UK). Historically, a diagnosis was a disqualifier, but in 2026, the rules have become more nuanced. A pilot must demonstrate that their symptoms do not impair their flight safety and, most critically, they cannot be taking any stimulant medications (like Adderall or Ritalin) while flying. If a pilot has a history of ADHD, they must typically undergo a comprehensive battery of neuropsychological testing to prove their "functional capacity" to handle a multi-tasking flight deck environment. If they can pass these tests and remain "off-medication" for a specified period, they can be granted a Special Issuance Medical Certificate. While the "stigma" is fading, it remains one of the most difficult medical conditions to clear for a commercial license, as the aviation authorities prioritize "absolute focus" and the ability to follow complex procedures under high-stress conditions without pharmaceutical assistance.