[arbitrandomuser]

I don't see how a passive scan like this can be harmful . Ofcourse if it does show a positive one should confirm further with a biopsy or other standard confirmation diagnostic. As for false negatives... If you feel something is wrong you should get it checked thoroughly anyway .

[dekhn]

you literally just said the scan has no value. THe point of a scan like this is to have absurdly low false negative and positive rates so that it's actionable. Unactionable medical diagnostics are worthless and just cost (money, fuel, time).

[Griffinsauce]

There are more costs, like others have described it might lead to unnecessary biopty that has real risks.

[tfgg]

So you should ignore it and see a doctor regardless.

[Arisaka1]

In an ideal world, that would be the case. However, people aren't 100% rational agents motivated by logic.

My aunt was diagnosed with Multiple Sclerosis which led her to lose her eyesight from her left eye, because she refused to get a thorough checkup by a professional, and even today whenever I tell her that I visited the doctor for an issue she has... not very good words to say (something something "you are a chicken, you're hypochodriac etc). And I'm saying this without entertaining the probability of her visiting a professional who just happened to be in a bad day, which could potentialy lead to a wrong diagnosis.

I've been hunting down my own diagnosis for symptoms everyone seems to tell me that aren't serious (nail discoloration and a 24/7 headache that feels like my arteries are pulsing, which lasts for YEARS, cold fingertips during the winter, and more).

I get what you're trying to say and I agree with the general message. However, more checkpoints to catch a potential failure are good. For example, if someone were to make a take-at-home device which scans nailfold capillaries (no reason for something like that to exist) I'd get that in a heartbeat. I'm being actively ignored by every medical professional that I have visited, and if I'm not ignored they give the minimum amount of attention, kind of like "well, it's not like you're dying so who cares?"

Fair note: I'm from Europe.

[arbitrandomuser]

If you don't feel good yes you should see a doctor regardless. Let's say you get a scan every year . If the scan is able to detect something earlier than a radiologist is able to identify i think it's worth paying attention to.