Chilled Ground & Chilling Area- Path of Exile

Chilling Area

A Chilling Area is a ground effect that inflicts chill. Chilled Ground, Creeping Frost, Frost Shield, and Vortices are Chilling Areas. Chill reduces Enemy Action Speed for 2 seconds.

Sources: Chilled Ground, Creeping Frost, Frost Shield, and Vortex.

What exactly constitutes "your chilling areas"? Do Skitterbots count?

Specifically the four things listed in the reminder-text in game: Chilled Ground, Creeping Frost, Frost Shield, and Vortices. Skitterbots are not one of those things, and if the chilling skitterbot instead worked by creating one of those effects around itself, that would be the skitterbot's chilling area, not yours.

More generally, how is credit for causing ailments counted when the effects aren't directly caused by you, e.g. Corpse Pact + Inpulsa's?

The ailments in that situation are directly caused by you. Corpse Pact is your passive skill, it causes you to inflict chill and shock. In a nonstandard way to be sure, but you are still inflicting those ailments. Enemies entering your chilling areas in general does not count as you chilling them, or as anything chilling them - they just become chilled.

I can't give a more detailed answer because I'm not sure what you mean by "credit for causing ailments".

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Chilled Ground

Chilled Ground chills anything standing on it. This does not stack with other chills. It is a detrimental ground effect.

Icon	Name	Type	Stats
	Chilled Ground	Debuff	Your actions are slowed while standing on chilled ground.

1. Chilled Ground Gems

Name	Category	Requires	Stats
Frostblink	Active skill gem	Level 4	Teleports the user to the target location and deals cold damage and leaves chilled ground to and from where the user traveled. The cooldown of this skill recovers faster with enemies hit.
Creeping Frost	Active skill gem	Level 12	Launches a frozen skull at a targeted area. The projectile will explode when it reaches the targeted area, or if it comes into contact with an enemy. This explosion causes initial damage and creates a chilled area that slows and deals cold damage over time to any enemies that enter it. This chilled ground area will move in the direction of nearby enemies.
Arctic Armour	Active skill gem	Level 16	Reserves mana to grant the caster physical and fire damage reduction while stationary, chill enemies that hit them, and cause them to leave behind a trail of chilled ground while moving.
Cold Snap	Active skill gem	Level 16	Deals cold damage to enemies in an area, leaving chilled ground that expands and deals cold damage over time. It has a cooldown that is bypassed by using Frenzy Charge. It also leaves behind an area of chilled ground that deals damage over time and has a 25% chance to grant a frenzy charge when you kill an enemy within its area of effect.

2. Chilled Ground Items

Item	Category	Lvl.	Stats	Note
Aquamarine Flask	flask	27	Creates Chilled Ground on Use	Basic item
Watcher’s Eye	jewel	1	Unaffected by Chilled Ground while affected by Purity of Ice	Unique
Mutewind Whispersteps	boots	42	Unaffected by Chilled Ground	Unique
Garukhan’s Flight	boots	62	Immune to Burning Ground, Shocked Ground and Chilled Ground	Unique
The Brine Crown	helmet	63	15% chance to create Chilled Ground when Hit with an Attack	Unique
Steppan Eard	boots	67	20% increased Movement Speed on Shocked Ground 50% increased Damage on Burning Ground Regenerate 2% of Life per second on Chilled Ground Unaffected by Desecrated Ground	Unique
Nuro’s Harp	bow	68	15% chance to create Chilled Ground when you Freeze an Enemy Create Consecrated Ground when you Shatter an Enemy 40% increased Effect of Chilled Ground	Unique

3. Chilled Ground Mods

Name	Lvl.	Stats	Type	Spawn Weighting
The Shaper's	68	Unaffected by Chilled Ground	Item mods	boots_shaper 800 default 0
Redeemer's	68	Unaffected by Chilled Ground	Item mods	boots_eyrie 500 default 0
of Ice	1	10% increased Quantity of Items found in this Area 6% increased Rarity of Items found in this Area +4% Monster pack size Area has patches of Chilled Ground 20 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 14 (Hidden)	Map mods	low_tier_map 250 default 0
of Ice	1	10% increased Quantity of Items found in this Area 6% increased Rarity of Items found in this Area +4% Monster pack size Area has patches of Chilled Ground 24 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 16 (Hidden)	Map mods	mid_tier_map 250 default 0
of Ice	1	10% increased Quantity of Items found in this Area 6% increased Rarity of Items found in this Area +4% Monster pack size Area has patches of Chilled Ground 28 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 18 (Hidden)	Map mods	top_tier_map 250 default 0
of Ice	1	11% increased Quantity of Items found in this Area Area has patches of Chilled Ground 20 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 14 (Hidden)	Legacy map mods	secret_area 0 old_map 0 default 0
of Ice	1	12% increased Quantity of Items found in this Area 6% increased Rarity of Items found in this Area Area has patches of Chilled Ground 20 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 14 (Hidden)	Legacy map mods	low_tier_map 0 default 0
of Ice	1	12% increased Quantity of Items found in this Area 6% increased Rarity of Items found in this Area Area has patches of Chilled Ground 24 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 16 (Hidden)	Legacy map mods	mid_tier_map 0 default 0
of Ice	1	12% increased Quantity of Items found in this Area 6% increased Rarity of Items found in this Area Area has patches of Chilled Ground 28 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 18 (Hidden)	Legacy map mods	top_tier_map 0 default 0
MapChilledGroundDelve	1	(5-10)% increased Quantity of Items found in this Area (3-6)% increased Rarity of Items found in this Area +(3-6)% Monster pack size Area has patches of Chilled Ground 20 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 14 (Hidden)	Delve area mods	default 250
MapChilledGroundDelve2	52	(5-10)% increased Quantity of Items found in this Area (3-6)% increased Rarity of Items found in this Area +(3-6)% Monster pack size Area has patches of Chilled Ground 24 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 16 (Hidden)	Delve area mods	default 250
MapChilledGroundDelve3	173	(5-10)% increased Quantity of Items found in this Area (3-6)% increased Rarity of Items found in this Area +(3-6)% Monster pack size Area has patches of Chilled Ground 28 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 18 (Hidden)	Delve area mods	default 250
MapChilledGroundSynthesis	50	Area has patches of Chilled Ground 20 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 14 (Hidden)	Synthesis area mods	default 250
MapChilledGroundSynthesis2	68	Area has patches of Chilled Ground 24 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 16 (Hidden)	Synthesis area mods	default 250
MapChilledGroundSynthesis3	79	Area has patches of Chilled Ground 28 patches with Ground Effect per 100 tiles (Hidden) Ground Effect has a radius of 18 (Hidden)	Synthesis area mods	default 250

4. List of Ground Buff & Debuff

A ground effect is the general term for a patch of terrain that has some consequence on characters or monsters positioned on it. Detrimental ground effects do not affect allies of the character that created them, while those ground effects created by monsters or the environment will not affect other monsters. The inverse is true for beneficial ground effects.

Characters and monsters can be affected simultaneously by different types of overlapping ground effects. Those of the same type do not cumulatively stack their effects. For ground effects that inflict damage, only one of each type with the highest damage per second will cause damage at any given moment.

Name	Type	Stats
Burning Ground	Debuff	You are taking burning damage while standing on burning ground.
Burning Ground	Debuff	You are taking burning damage while standing on burning ground.
Chilled Ground	Debuff	Your actions are slowed while standing on chilled ground
Frozen Ground	Debuff	You are taking Cold Damage over Time.
Shocked Ground	Debuff	You take increased damage while standing on shocked ground.
Consecrated Ground	Buff	Grants Life Regeneration
Consecrated Ground	Debuff	You are on an enemy's Consecrated Ground, increasing your chance to be critically hit.
Desecrated Ground	Debuff	You are taking Chaos Damage while standing on Desecrated Ground
Caustic Ground	Debuff	You are taking Chaos Damage from standing in Caustic Ground.
Profane Ground	Debuff	You are on an enemy's Profane Ground, lowering your resistances and making you easier to critically hit.
Smoke Cloud	Debuff	You are significantly less accurate while standing in smoke.
Tarred Ground	Debuff	Your movement speed is reduced while standing in tar.
Fungal Ground	Debuff	You deal less Damage due to enemy Fungal Ground.
Eldritch Decay	Debuff	You are taking Physical Damage while standing in Eldritch Decay
Mana Rune	Debuff	You are taking Lightning Damage and losing Mana.
Net Throw	Debuff	Your movement speed is reduced while standing in a net.
Slipstream	Buff	You have increased Action Speed from the Slipstream.
Blood Ritual	Debuff	Your are taking physical damage over time from a Blood Ritual