itsallavengers:

So while researching about the disorder, I started seeing quite a few correlations between A Certain Fave™ of mine and the symptoms that were shown on some of the websites I visited. For Example:

• Coffee/ caffeine works to actually help calm down and regulate the mood, helping focus and productivity
• Two settings- hyperfixation or complete lack of focus. A person with ADHD can completely lose themselves to a task they are engaged in/ worried about, forgetting to eat, sleep or generally perform basic human functions until it is completed. And then, on the other end of the spectrum- they will also find it difficult to focus AT ALL on things they are not interested in, choosing instead to zone out and lose concentration very easily.
• Constant fidgeting, with anything and everything.
• Conversations moving faster than anyone else can keep up with, hopping from point A to Z in the space of 0.3 seconds
• Forgetfulness and general memory imbalances. Either perfect or not there at all. 
• Reckless behaviour and lack of sense of danger.
• Can also manifest itself in forms of anxiety
• Difficulty with socialising- often talking very loudly and jumping in or interrupting because they lack impulse control

And listen. Listen, okay- we know canononically that these are all Very Much Tony Stark Things;  hyperfocusing on some tasks and then completely losing interest in others, reckless and impulsive behaviours and using coffee as a tool to focus or help productivity are just some of the FEW common examples. So, y’know, I’m headcanoning this.

Tony Stark has ADHD.