Continuous Damage

[ChampionMasquerade.5283]

When using moves such as Drake's Breath, the damage I do goes upward in a pattern such as 2000, 5000, 8000, 11000 (not the exact numbers). Is this the same hit and it did 11000 damage total, or are they all considered separate and did their own total amounts?

[Khisanth.2948]

Those are just the sum of all the hits. Easily seen if you check the combat log.