---
title: HKCategoryValuePresence
framework: healthkit
role: symbol
role_heading: Enumeration
path: healthkit/hkcategoryvaluepresence
---

# HKCategoryValuePresence

Categories that indicate whether a symptom is present.

## Declaration

```swift
enum HKCategoryValuePresence
```

## Topics

### Presence of Symptoms

- [HKCategoryValuePresence.notPresent](healthkit/hkcategoryvaluepresence/notpresent.md)
- [HKCategoryValuePresence.present](healthkit/hkcategoryvaluepresence/present.md)

### Initializers

- [init(rawValue:)](healthkit/hkcategoryvaluepresence/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Copyable](swift/copyable.md)
- [Equatable](swift/equatable.md)
- [Escapable](swift/escapable.md)
- [HKCategoryValuePredicateProviding](healthkit/hkcategoryvaluepredicateproviding.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Assigning Values

- [HKCategoryValue](healthkit/hkcategoryvalue.md)
- [HKCategoryValueCervicalMucusQuality](healthkit/hkcategoryvaluecervicalmucusquality.md)
- [HKCategoryValueMenstrualFlow](healthkit/hkcategoryvaluemenstrualflow.md)
- [HKCategoryValueOvulationTestResult](healthkit/hkcategoryvalueovulationtestresult.md)
- [HKCategoryValueContraceptive](healthkit/hkcategoryvaluecontraceptive.md)
- [HKCategoryValueSleepAnalysis](healthkit/hkcategoryvaluesleepanalysis.md)
- [HKCategoryValueAppetiteChanges](healthkit/hkcategoryvalueappetitechanges.md)
- [HKCategoryValueSeverity](healthkit/hkcategoryvalueseverity.md)
- [HKCategoryValueEnvironmentalAudioExposureEvent](healthkit/hkcategoryvalueenvironmentalaudioexposureevent.md)
- [HKCategoryValueHeadphoneAudioExposureEvent](healthkit/hkcategoryvalueheadphoneaudioexposureevent.md)
- [HKCategoryValueLowCardioFitnessEvent](healthkit/hkcategoryvaluelowcardiofitnessevent.md)
- [HKAppleWalkingSteadinessClassification](healthkit/hkapplewalkingsteadinessclassification.md)
- [HKCategoryValueAppleWalkingSteadinessEvent](healthkit/hkcategoryvalueapplewalkingsteadinessevent.md)
- [HKCategoryValuePregnancyTestResult](healthkit/hkcategoryvaluepregnancytestresult.md)
- [HKCategoryValueProgesteroneTestResult](healthkit/hkcategoryvalueprogesteronetestresult.md)