Appetite shifts in chronic inflammation are often about regulation, not willpower. Immune mediators can change smell sensitivity, gut motility, and nausea thresholds, so a cat may approach food but back away, or eat only certain textures. Appetite can also become irregular when mouth pain, joint pain, or airway congestion makes the act of eating less comfortable.
In the household, the most informative detail is the pattern: smaller meals, longer pauses between bites, or eating more at night when the home is quiet. Owners should note whether the cat prefers softer food, drops kibble, or chews on one side. A simple log of “offered vs eaten” and any lip-licking or head shaking helps the veterinarian decide whether to focus on dental, gastrointestinal, or pain-related causes first.