This is pretty much what modern medicine does 80% of the time. I think that evidence based medicine, however useful the idea was originally, has become a major vector for this. Here’s how it works: choose a symptom of a disorder you want to treat. Find a drug target that you think will reduce the symptom. Apply the drug. Does it reduce the symptom by a statistically significant amount? If so, great! You have “evidence” that the drug “treats” the disorder. Does it cure anything? No, but that’s not the question you asked.