---
title: electrodermalActivity
framework: healthkit
role: symbol
role_heading: Type Property
path: healthkit/hkquantitytypeidentifier/electrodermalactivity
---

# electrodermalActivity

A quantity sample type that measures electrodermal activity.

## Declaration

```swift
static let electrodermalActivity: HKQuantityTypeIdentifier
```

## Discussion

Discussion Electrodermal activity measures the conductance of the user’s skin. This conductance increases as the activity of the sweat glands increases. These samples use conductance units (described in HKUnit) and measure discrete values (described in HKQuantityAggregationStyle).

## See Also

### Lab and test results

- [bloodAlcoholContent](healthkit/hkquantitytypeidentifier/bloodalcoholcontent.md)
- [bloodGlucose](healthkit/hkquantitytypeidentifier/bloodglucose.md)
- [forcedExpiratoryVolume1](healthkit/hkquantitytypeidentifier/forcedexpiratoryvolume1.md)
- [forcedVitalCapacity](healthkit/hkquantitytypeidentifier/forcedvitalcapacity.md)
- [inhalerUsage](healthkit/hkquantitytypeidentifier/inhalerusage.md)
- [insulinDelivery](healthkit/hkquantitytypeidentifier/insulindelivery.md)
- [numberOfTimesFallen](healthkit/hkquantitytypeidentifier/numberoftimesfallen.md)
- [peakExpiratoryFlowRate](healthkit/hkquantitytypeidentifier/peakexpiratoryflowrate.md)
- [peripheralPerfusionIndex](healthkit/hkquantitytypeidentifier/peripheralperfusionindex.md)