[risyachka]

I believe you should visit a doctor only if this happens at least with some pattern.

If you sleep 24 hours twice a year and all other time you sleep 7-9 - it is a reason to see a doctor?

[Rivosa]

I'd say yes. 24 hours sleep is just insane. Unless you had a long travel journey with several flights and a lot of stress. If however, you had a normal day before and you slept 24h several times, then yes go see a doctor. At least do a blood check to be sure.

[forgotmypw17]

You said it yourself, unless you're under a lot of stress.

Sometimes the stress is not obvious.