Headache

Headache in Apple Health records a reported symptom and its subjective severity. The category does not classify a headache as migraine, tension-type or another diagnosis.

Unspecified is not the same as notPresent. Mild, moderate and severe are subjective labels; the integer codes are not a clinical measurement or a validated pain scale. These values come from Apple’s HKCategoryValueSeverity enumeration.

No. A source can store a moment, an interval or several observations during the same episode. Duplicate imports, overlapping intervals and changes in severity can all increase the row count. Counting attacks requires an explicit episode rule and source context beyond the category code.

The code also lacks location, aura, associated symptoms and medication use. Preserve those as separate documented details when available. They cannot be reconstructed from mild, moderate or severe labels.

Logged sleep, meals, activity and menstrual dates can be placed next to headache observations when coverage exists. State whether alignment uses start dates, reported onset or interval overlap. Retrospective reporting and missed entries limit comparisons; a matching day is not a demonstrated trigger. This is a diary structure, not a diagnostic test.

This is a logged observation, rather than a regularly sampled sensor reading. Start-to-start gaps describe the saved history and the source’s logging habits. An interval’s length describes what the source saved; it does not by itself establish the symptom’s continuous duration. Record start and end times, source changes and repeated or overlapping entries before interpreting a timeline.

These intervals do not establish continuously measured symptoms or identify a cause. Numeric averages, physiological reference ranges and numeric outlier thresholds do not apply to the category codes.

This HealthKit category is not listed in the current PulsHealth sync catalog. No headache records were found in the selected database research window; that coverage cannot establish whether corresponding entries exist in Apple Health. Category frequencies, source differences, logging cadence, interval patterns and relationships with other logged observations could not be measured. The absence of records does not establish the absence of the symptom. There is no measured figure or population estimate to infer from this coverage.