The answer to 'flickering recessed lighting' is that there are several common causes, including loose connections, faulty light bulbs, and issues with the electrical circuit. Flickering lights can be a sign of an electrical problem that requires attention.
Loose connections in the recessed light fixture or the electrical box it's wired to can cause flickering. This is often a simple fix that a homeowner can address by tightening the connections. Faulty light bulbs can also lead to flickering, so try replacing the bulb to see if that resolves the issue. More serious problems, like issues with the electrical circuit or the light fixture itself, may require the attention of a licensed electrician.