Here's a feature that could be useful, but which might produce alarming results If you are not expecting it:
The internal forum Search function now includes your private messages in the search results.
If you are searching on your symptoms, and if you are someone with a lot of Private Conversations (now updated and referred to as Direct Messages) in which you discuss your symptoms privately with another member, you might initially be alarmed to see these discussions in your search results if your search terms match topics in your messages!
However, having just reviewed and tested this feature at someone's request, I can assure everyone that the search results from DMs are restricted to the messages of the logged-in user who is performing the search!
FYI, instead of the default "Search Everything", searches can be limited to just threads (recommended for most), or to just profile posts, or your DMs, or to tags. Advanced search parameters can also restrict results to individual subforums and/or defined time periods.