Is it possible to improve the game having HDAS without treatment?

I am quite sure I have ADHS, and I will next week try to get a diagnosis and probably begin a treatment. I not only stagnated in my chess but I am something like 300 points weaker in blitz and rapid compared with what I was doing many years ago.
I would like to hear about your experience with ADHS and the connection with your game. Thanks!

Hi. I wish I could help you. I too did not get a response with a remotely similar problem. I think you should consult this with you specialist. Good that you have hope for treatment.  There are worse problems than ADHS.

Stagnation happens to many players, so I would not necessarily blame your 300 drop on ADHD.

It so happens that I’m a depressed/anxiety sufferer. I wouldn’t compare any condition to another, but I have suffered big losses, but come back from them. Bizarrely, online chess helps me (even if I lose!) Purely because everything gets put aside for the game.

Many people here will tell you to play longer games, and I’d agree. Find a time frame you’re happy with. For me, it’s 15/10 at the moment, just because of life stuff.

Just keep playing. If it makes you feel good. And if it doesn’t., stop.

Best of luck; I’m in my 50s, a bad amateur player with issues, and probably need a diagnosis myself. Don’t feel alone, and good luck for future games 😀

Guys, thanks for your answers. I will take the advice of 15/10, it is certainly a way how to stop playing several hours in a row without any quality in the game. I was somehow expecting more people telling their experience with ADHD (ok, that's the English term), as it is something quite common. Anyway, thanks, and yes, I will consult a specialist this week, if possible.

I wonder, what are results working with your specialist?

Thanks for asking. I talked to my doctor, not a specialist, and he said I did quite well in my life so far, so I shouldn’t worry. I guess he is right. I am living with this problem my whole life, and was able to deal with it. 
Concerning chess: I stopped playing blitz and will begin playing rapid when I feel I know my openings. In the meantime time I go on playing 960 Daily and Daily.