Description
Measure a supplied itch episode's nonnegative duration.
Dermatology records distinguish specimen sites, image permissions, orientation, scale references, area models and observation states. Full ellipse axes differ from radii, and rectangular area estimates need not match a lesion or wound. Supplied labels and scalar image measurements do not establish clinical findings or appropriate care.
Measure a supplied itch episode's nonnegative duration.
When to use this tool
Use Dermatology Diary Itch Time Pair when you already have onsetTimestampSeconds, endTimestampSeconds and need to measure a supplied itch episode's nonnegative duration.
How to use the tool and how it works
- Enter onsetTimestampSeconds, endTimestampSeconds. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read durationSeconds. Use the output convention below.
Require endTimestampSeconds>=onsetTimestampSeconds; return end-onset.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| onsetTimestampSeconds | Onset Timestamp Seconds | Required. Finite number. |
| endTimestampSeconds | End Timestamp Seconds | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| durationSeconds | Duration Seconds | Required. Finite number. |
{
"input": {
"onsetTimestampSeconds": 1000,
"endTimestampSeconds": 1180
},
"output": {
"durationSeconds": 180
}
}Limitations and assumptions
- No symptom is detected, clock checked, severity measured, diagnosis inferred or appropriate care selected.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review the original clinical, specimen and image records with verified calibration and consent context. Use the complete appropriate assessment for interpretation; local geometry, display labels and reporting conventions do not identify a lesion, diagnose disease or choose treatment.
References
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