> Absurdly enough, the room temperature doesn't have much to do with it, because the air condition is working at full throttle and my room is close to 80-82 Fahrenheit most of the time.
Airconditioning, open windows, or bad isolation can cause an un undesired airflow.
> The doctor told me that it's called Raynaud's phenomenon and that I'll have to figure out ways to deal with it.
Wait, your doctor did not tell you how to deal with this? You're not paying anyone here for medical advice.
For people who work behind a desk for 8 hours a day, 5 days a week I recommend the following:
First of all, regular physical exercise. Its obvious but it has to be stated, and its even more so important if you don't do physical labour.
Second, for office work the following advice (in no particular order: based on own experience, pomodoro techninque, plus local laws concerning this type of work): put an alarm on your smartphone or watch or equivalent device, set it to one hour. Every time the alarm goes off, you take a walk and do some stretches, total of min 3 up to 5 min (more will cause drama with coworkers and/or boss). If someone complains, you tell them that smokers get to smoke in the bosses time (thereby having a walk, good for their blood circulation; smoking itself obviously isn't good for blood circulation and if you do quit ASAP; consult your M.D. for aid) and you need a small walk to keep your blood circulation going. (Of course, you could also try to plan meetings or grabbing a coffee together with your walk & stretch, tho I don't recommend 6+ coffee during 8 hours of work.) During this downtime, you can think of whatever comes up in your mind. It is actually rather likely that more often than not you get inspiration during your downtime, but that is a useful byproduct not the main goal (this is called the diffused mode of thinking). Oh, and if someone laughs at you, know that when you're both elder you're the one who's laughing because you cared about your physical health throughout your working career. I mentioned this is partly based on pomodoro technique. Its a variation on it. If you're self employed, I actually recommend the pomodoro technique itself (ie. traditional pomodoro is 25 minutes of focus, with a 5 min break, and after 2 hours, a longer break (there are variations, worth looking into this further)). But if you're working for a boss or in a team then a small break after 25 minutes of focus is frowned upon. I believe its a productivity loss, but this is the way the status quo of work force generally thinks, sadly. There's some excellent pomodoro apps available for macOS, Android, iOS and surely also for other OSes and platforms. Like I said, alarm apps also work.