IMHO if you have a sufficiently empirical bent of mind, you are both more equipped and more invested in a good diagnosis and analysis of your own conditions. I have a personal EMR system that I run for the family and I get as much data as I need to tackle health issues. If you do, it is important to maintain epistemic hygiene: you need to correctly consider base rates, false diagnoses, and so on.

If you are able to do these things, it's worthwhile to record everything you want: full body MRIs, CT scans of the head, all your X-rays, your blood records and so on. Other countries are easier to get these in, but even in the US a full body MRI is under $2k, Ulta will test your blood for you, and so on. You can't get most medication here easily because it is prescription-gated[0], but many things are available in India (where I'm from).

Neurological conditions are a pretty big risk, because self-analysis is using degraded machinery at that point, though. Admittedly, a hole in the way I handle things. This is another one of those situations where it is valuable to have a wife.

0: Almost all self-analysis encounters the problem that a third-party to the interaction is the one usually paying, and so most players cater to that