Part of an ongoing series of 5e (2014) Rules notes. This also covers 5.5e (2024) rules.
D&D 5e uses common Conditions as a modular way of showing the results of various attacks, spells, environmental issues, etc. By defining what it means to be “Blinded,” the rules can say that Condition is applied to someone without explaining what it means.
5.5e (2024) continues this, but modifies some of the Condition meanings, as well as adding a few new ones. See here and here.
In the table below, 5e (only) notes are in black, 5.5e (only) notes are in red, and notes common in both editions are in blue.

Note that for the Incapacitated-related action restrictions, while 5e did not specify “no Bonus Actions” in the Condition descriptions, elsewhere in the rules it did note that if Actions were not allowed, it was the same for Bonus Actions. The notes of this sort in italics are inheriting it from the Incapacitated Condition.
Note also that Exhausted is another type of Condition, and is the only one with effect that can stack.
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