Suffocation

When under this debuff, you will start taking lots of damage very fast. How to stop this debuff is by stopping what you did to get this debuff and move out of the way of the place you got the debuff in. (Example: move out of silt or slush on you and it will stop the debuff) Drowning strangely will not give you this debuff. It seems like it should give you this debuff, but it doesn't give you Suffocation. When taking Suffocation damage, the damage numbers bounce and do not stop until the Suffocation stops. This was introduced in 1.2 but before it would still hurt you when suffocating but not give you this debuff. Here is the Debuffs page.