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# Secondary damage

Secondary damage is a component of certain attack and spell skills. It is also attainable through certain passives and items. It is a damage source that is not itself a spell, an attack or damage over time.

Modifiers to attacks, spells and damage over time do not apply to secondary damage, although it can be scaled by other kinds of damage modifiers where applicable. For example, the secondary damage component of

Detonate Dead
 can be scaled with modifiers to area damage, fire damage, and Global damage.

The secondary damage component of skills can be blocked, dodged or evaded according to whether the skill is an attack or a spell.

## Sources other than gems

Explosions - All explosion damage is considered secondary damage. This includes explosions from items, ascendancy passives, keystones, and cluster jewel passives.

- Explosion example: Crusader influence body armor's "Enemies you Kill Explode, dealing 3% of their Life as Physical Damage".
- For more information see [[Explode]].