You can sleep for what feels like a thousand years and still wake up tired. People call you lazy while you are just trying to function through molasses. This code covers the kind of tired that no amount of coffee can fix and no amount of "have you tried yoga" can touch. The hat is almost a uniform at this point, since being dressed is half the victory. It is a soft reminder that needing more sleep does not make you less worthy of being awake in the world.

Hypersomnia unspecified is used when excessive sleepiness or prolonged sleep duration is the central problem but a more specific hypersomnolence disorder has not been determined. It acknowledges real functional impact even when the cause is not fully clear. Hypersomnia describes excessive sleepiness not fully explained by other conditions. That brevity hides the social cost of being the person who is always "too tired" to keep up. The hat stands in for the missing note that fatigue is a symptom, not a personality flaw.