The answer to 'flickering light fixture' is that a flickering light is usually caused by a problem with the electrical connection or the light bulb itself. Common causes include a loose light fixture, a bad light switch, a problem with the wiring, or a faulty light bulb. Symptoms include the light flickering, blinking, or dimming intermittently.
If the flickering is isolated to one light fixture, the first thing to try is replacing the light bulb. If that doesn't fix it, check the light fixture itself for any loose connections. Tightening the fixture or replacing the socket can often resolve the issue. However, if the flickering is happening across multiple lights in the same circuit, it may indicate a more serious electrical problem that requires the attention of a licensed electrician.