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Rome IV H2c child abdominal migraine

Rome IV child abdominal migraine

Apply the Hyams 2016 Rome IV H2c child/adolescent abdominal migraine diagnostic criteria and return associated_features_met (0-6) and whether the published H2c box holds (rome_iv_child_abdominal_migraine).

LIVE $0.005 USDC GET /api/calc/rome_iv_child_abdominal_migraine

Markdown: /docs/rome-iv-child-abdominal-migraine.md · Canonical: https://magentlab.com/docs/rome-iv-child-abdominal-migraine

Not a medical device. Not a diagnosis, dose, or listing recommendation.

What it computes

When to use

When an agent already has the caller-assigned Hyams 2016 Rome IV H2c flags (four core episode flags, six associated features, not explained by another condition, and 6-month fulfillment) and needs whether the published child abdominal migraine box holds. magent does not examine the child.

When not to use

Not a medical device.
Not a diagnosis. magent does not diagnose abdominal migraine.
The caller assigns the twelve flags. magent does not examine the child.
The published H2c box requires all features occurring at least twice; that frequency is assigned in fulfilled_at_least_6_months. magent does not parse a separate episode-count integer.
Pain should be the most severe and distressing symptom in the published box; that is not a separate parsed flag.
This tool is Hyams 2016 Rome IV H2c child/adolescent abdominal migraine only. Not Hyams 2016 H1a child cyclic vomiting. Not adult migraine scores.

Formula

rome_iv_child_abdominal_migraine iff paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more and episodes_separated_weeks_to_months and pain_incapacitating and stereotypical_pattern and associated_features_met >= 2 and not_explained_by_another_condition and fulfilled_at_least_6_months; associated_features_met counts anorexia, nausea, vomiting, headache, photophobia, and pallor (Hyams 2016 Rome IV H2c Abdominal Migraine)

Citation

Title: Childhood Functional Gastrointestinal Disorders: Child/Adolescent
Authors: Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M
Source: Gastroenterology. 2016;150(6):1456-1468
DOI: 10.1053/j.gastro.2016.02.015

Worked example

Four core flags, two associated features, and 6 months

Given: anorexia=trueepisodes_separated_weeks_to_months=truefulfilled_at_least_6_months=trueheadache=falsenausea=truenot_explained_by_another_condition=truepain_incapacitating=truepallor=falseparoxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more=truephotophobia=falsestereotypical_pattern=truevomiting=false

Paroxysmal intense periumbilical, midline, or diffuse pain lasting 1 hour or more is true
Episodes separated by weeks to months, incapacitating pain, and stereotypical pattern are true
Anorexia and nausea are true; vomiting, headache, photophobia, and pallor are false (2 of 6)
Not explained by another condition and fulfilled at least 6 months are true
rome_iv_child_abdominal_migraine is true

Four core flags and timing with only one associated feature

Given: anorexia=trueepisodes_separated_weeks_to_months=truefulfilled_at_least_6_months=trueheadache=falsenausea=falsenot_explained_by_another_condition=truepain_incapacitating=truepallor=falseparoxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more=truephotophobia=falsestereotypical_pattern=truevomiting=false

Four core episode flags, not explained by another condition, and 6-month fulfillment hold
Only anorexia is true (1 of 6)
rome_iv_child_abdominal_migraine is false

Also searched as

Rome IV child abdominal migraine
Hyams 2016 abdominal migraine
Rome IV H2c
child adolescent abdominal migraine
pediatric abdominal migraine Rome IV
Hyams H2c abdominal migraine
functional abdominal migraine child
Rome IV H2c abdominal migraine

Try

Opens the live endpoint. Unpaid browser requests show the paywall; agents should send Accept: application/json.

/api/calc/rome_iv_child_abdominal_migraine?paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more=true&episodes_separated_weeks_to_months=true&pain_incapacitating=true&stereotypical_pattern=true&anorexia=true&nausea=true&vomiting=false&headache=false&photophobia=false&pallor=false&not_explained_by_another_condition=true&fulfilled_at_least_6_months=true

Full URL: https://api.magentlab.com/api/calc/rome_iv_child_abdominal_migraine?paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more=true&episodes_separated_weeks_to_months=true&pain_incapacitating=true&stereotypical_pattern=true&anorexia=true&nausea=true&vomiting=false&headache=false&photophobia=false&pallor=false&not_explained_by_another_condition=true&fulfilled_at_least_6_months=true

Call

Expect HTTP 402 until you retry with PAYMENT-SIGNATURE. Incomplete query params return HTTP 400 before any quote or charge.

curl -i -H "Accept: application/json" "https://api.magentlab.com/api/calc/rome_iv_child_abdominal_migraine?paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more=true&episodes_separated_weeks_to_months=true&pain_incapacitating=true&stereotypical_pattern=true&anorexia=true&nausea=true&vomiting=false&headache=false&photophobia=false&pallor=false&not_explained_by_another_condition=true&fulfilled_at_least_6_months=true"

Parameters

Name	Type	Required	Description
`paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more`	boolean	required	Paroxysmal episodes of intense, acute periumbilical, midline, or diffuse abdominal pain lasting 1 hour or more, as assigned (Hyams 2016 Rome IV H2c). true or false as assigned by the caller. magent does not examine the child.
`episodes_separated_weeks_to_months`	boolean	required	Episodes are separated by weeks to months, as assigned (Hyams 2016 Rome IV H2c). true or false as assigned by the caller. magent does not examine the child.
`pain_incapacitating`	boolean	required	The pain is incapacitating and interferes with normal activities, as assigned (Hyams 2016 Rome IV H2c). true or false as assigned by the caller. magent does not examine the child.
`stereotypical_pattern`	boolean	required	Stereotypical pattern and symptoms in the individual patient, as assigned (Hyams 2016 Rome IV H2c). true or false as assigned by the caller. magent does not examine the child.
`anorexia`	boolean	required	Anorexia during episodes (one of six associated features; at least two required). true or false as assigned by the caller. magent does not examine the child.
`nausea`	boolean	required	Nausea during episodes (one of six associated features; at least two required). true or false as assigned by the caller. magent does not examine the child.
`vomiting`	boolean	required	Vomiting during episodes (one of six associated features; at least two required). true or false as assigned by the caller. magent does not examine the child.
`headache`	boolean	required	Headache during episodes (one of six associated features; at least two required). true or false as assigned by the caller. magent does not examine the child.
`photophobia`	boolean	required	Photophobia during episodes (one of six associated features; at least two required). true or false as assigned by the caller. magent does not examine the child.
`pallor`	boolean	required	Pallor during episodes (one of six associated features; at least two required). true or false as assigned by the caller. magent does not examine the child.
`not_explained_by_another_condition`	boolean	required	After appropriate evaluation, the symptoms cannot be fully explained by another medical condition, as assigned (Hyams 2016 Rome IV H2c). true or false as assigned by the caller. magent does not examine the child.
`fulfilled_at_least_6_months`	boolean	required	Criteria fulfilled for at least 6 months, including that all features occurred at least twice, as assigned (Hyams 2016 Rome IV H2c). true or false as assigned by the caller. magent does not take a history.

Bulk (POST)

POST the same path with a JSON items array. The first item is the GET unit; each additional item is $0.002. Invalid items return HTTP 400 before settlement.

POST /api/calc/rome_iv_child_abdominal_migraine Max 25 unit_amount + extra_item_amount * (n - 1) extra $0.002 PREVIEW

1 to 25 items. Each item uses the same keys as the GET query parameters.
POST of 1 item costs the same as GET. Lists longer than 25: chunk into multiple POSTs. Extra items still execute; do not pad dummy rows.
The first invalid item fails the whole request (index in the 400 JSON). You are not charged.
HTTP 200 is {count, path, items}. Each items[i] is the GET 200 body for that row.
Catalog misses (empty matches, found=false) stay paid 200s inside that slot.
x402 resource URL is this path plus n and body_sha256. Browsers that prefer text/html get the same paywall as GET; Pay retries POST with the same items.

Example request (fixture)

{
  "items": [
    {
      "anorexia": "true",
      "episodes_separated_weeks_to_months": "true",
      "fulfilled_at_least_6_months": "true",
      "headache": "false",
      "nausea": "true",
      "not_explained_by_another_condition": "true",
      "pain_incapacitating": "true",
      "pallor": "false",
      "paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more": "true",
      "photophobia": "false",
      "stereotypical_pattern": "true",
      "vomiting": "false"
    },
    {
      "anorexia": "true",
      "episodes_separated_weeks_to_months": "true",
      "fulfilled_at_least_6_months": "true",
      "headache": "false",
      "nausea": "true",
      "not_explained_by_another_condition": "true",
      "pain_incapacitating": "true",
      "pallor": "false",
      "paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more": "true",
      "photophobia": "false",
      "stereotypical_pattern": "true",
      "vomiting": "false"
    }
  ]
}

Open bulk paywall →

Opens a two-item fixture on the API host. Unpaid browsers get the same MetaMask paywall as GET; Pay retries POST with those items.

Example 200 (fixture)

{
  "count": 2,
  "path": "/api/calc/rome_iv_child_abdominal_migraine",
  "items": [
    {
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M",
        "doi": "10.1053/j.gastro.2016.02.015",
        "id": "hyams-2016",
        "pmid": "27144632",
        "source": "Gastroenterology. 2016;150(6):1456-1468",
        "title": "Childhood Functional Gastrointestinal Disorders: Child/Adolescent"
      },
      "formula": "rome_iv_child_abdominal_migraine",
      "formula_expression": "rome_iv_child_abdominal_migraine iff paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more and episodes_separated_weeks_to_months and pain_incapacitating and stereotypical_pattern and associated_features_met >= 2 and not_explained_by_another_condition and fulfilled_at_least_6_months; associated_features_met counts anorexia, nausea, vomiting, headache, photophobia, and pallor (Hyams 2016 Rome IV H2c Abdominal Migraine)",
      "criteria": [
        {
          "factor": "paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more",
          "met": true
        },
        {
          "factor": "episodes_separated_weeks_to_months",
          "met": true
        },
        {
          "factor": "pain_incapacitating",
          "met": true
        },
        {
          "factor": "stereotypical_pattern",
          "met": true
        },
        {
          "factor": "anorexia",
          "met": true
        },
        {
          "factor": "nausea",
          "met": true
        },
        {
          "factor": "vomiting",
          "met": false
        },
        {
          "factor": "headache",
          "met": false
        },
        {
          "factor": "photophobia",
          "met": false
        },
        {
          "factor": "pallor",
          "met": false
        },
        {
          "factor": "not_explained_by_another_condition",
          "met": true
        },
        {
          "factor": "fulfilled_at_least_6_months",
          "met": true
        },
        {
          "value": 2,
          "factor": "associated_features_ge_2",
          "met": true
        }
      ],
      "associated_features_met": 2,
      "rome_iv_child_abdominal_migraine": true
    },
    {
      "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
      "citation": {
        "authors": "Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M",
        "doi": "10.1053/j.gastro.2016.02.015",
        "id": "hyams-2016",
        "pmid": "27144632",
        "source": "Gastroenterology. 2016;150(6):1456-1468",
        "title": "Childhood Functional Gastrointestinal Disorders: Child/Adolescent"
      },
      "formula": "rome_iv_child_abdominal_migraine",
      "formula_expression": "rome_iv_child_abdominal_migraine iff paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more and episodes_separated_weeks_to_months and pain_incapacitating and stereotypical_pattern and associated_features_met >= 2 and not_explained_by_another_condition and fulfilled_at_least_6_months; associated_features_met counts anorexia, nausea, vomiting, headache, photophobia, and pallor (Hyams 2016 Rome IV H2c Abdominal Migraine)",
      "criteria": [
        {
          "factor": "paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more",
          "met": true
        },
        {
          "factor": "episodes_separated_weeks_to_months",
          "met": true
        },
        {
          "factor": "pain_incapacitating",
          "met": true
        },
        {
          "factor": "stereotypical_pattern",
          "met": true
        },
        {
          "factor": "anorexia",
          "met": true
        },
        {
          "factor": "nausea",
          "met": true
        },
        {
          "factor": "vomiting",
          "met": false
        },
        {
          "factor": "headache",
          "met": false
        },
        {
          "factor": "photophobia",
          "met": false
        },
        {
          "factor": "pallor",
          "met": false
        },
        {
          "factor": "not_explained_by_another_condition",
          "met": true
        },
        {
          "factor": "fulfilled_at_least_6_months",
          "met": true
        },
        {
          "value": 2,
          "factor": "associated_features_ge_2",
          "met": true
        }
      ],
      "associated_features_met": 2,
      "rome_iv_child_abdominal_migraine": true
    }
  ]
}

Response

Field	Type	Description
`formula`	string	rome_iv_child_abdominal_migraine
`formula_expression`	string	Hyams 2016 Rome IV H2c child/adolescent abdominal migraine: paroxysmal intense periumbilical, midline, or diffuse pain lasting 1 hour or more, episodes separated by weeks to months, incapacitating stereotypical pain, at least two associated features, not explained by another condition, and fulfilled at least 6 months
`associated_features_met`	integer	Count of true associated features among anorexia, nausea, vomiting, headache, photophobia, and pallor (0-6)
`rome_iv_child_abdominal_migraine`	boolean	true only when the four core episode flags, at least two associated features, not explained by another condition, and 6-month fulfillment all hold. Not a diagnosis.
`criteria`	array	Per-factor rows with factor and met; associated_features_ge_2 includes value 0-6
`citation`	object	Hyams 2016 Gastroenterology citation
`disclaimer`	string	Not-a-device notice

Example JSON

Machine form of the same example. Frozen fixture. Not a live lookup.

{
  "disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
  "citation": {
    "authors": "Hyams JS, Di Lorenzo C, Saps M, Shulman RJ, Staiano A, van Tilburg M",
    "doi": "10.1053/j.gastro.2016.02.015",
    "id": "hyams-2016",
    "pmid": "27144632",
    "source": "Gastroenterology. 2016;150(6):1456-1468",
    "title": "Childhood Functional Gastrointestinal Disorders: Child/Adolescent"
  },
  "formula": "rome_iv_child_abdominal_migraine",
  "formula_expression": "rome_iv_child_abdominal_migraine iff paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more and episodes_separated_weeks_to_months and pain_incapacitating and stereotypical_pattern and associated_features_met >= 2 and not_explained_by_another_condition and fulfilled_at_least_6_months; associated_features_met counts anorexia, nausea, vomiting, headache, photophobia, and pallor (Hyams 2016 Rome IV H2c Abdominal Migraine)",
  "criteria": [
    {
      "factor": "paroxysmal_intense_periumbilical_midline_or_diffuse_pain_lasting_1_hour_or_more",
      "met": true
    },
    {
      "factor": "episodes_separated_weeks_to_months",
      "met": true
    },
    {
      "factor": "pain_incapacitating",
      "met": true
    },
    {
      "factor": "stereotypical_pattern",
      "met": true
    },
    {
      "factor": "anorexia",
      "met": true
    },
    {
      "factor": "nausea",
      "met": true
    },
    {
      "factor": "vomiting",
      "met": false
    },
    {
      "factor": "headache",
      "met": false
    },
    {
      "factor": "photophobia",
      "met": false
    },
    {
      "factor": "pallor",
      "met": false
    },
    {
      "factor": "not_explained_by_another_condition",
      "met": true
    },
    {
      "factor": "fulfilled_at_least_6_months",
      "met": true
    },
    {
      "value": 2,
      "factor": "associated_features_ge_2",
      "met": true
    }
  ],
  "associated_features_met": 2,
  "rome_iv_child_abdominal_migraine": true
}

Client errors (HTTP 400)

Invalid params return 400 without charge. Shared HTTP 402 and 503 meanings: Payments.

HTTP	Code	When
400	`invalid_rome_iv_child_abdominal_migraine`	Rome IV child abdominal migraine needs the Hyams 2016 child/adolescent H2c flags. Returned before settlement; you are not charged.
400	`invalid_flag`	boolean clinical flags must be true or false Returned before settlement; you are not charged.
400	`invalid_items`	POST body must be a JSON object with only an items array Returned before settlement; you are not charged.
400	`invalid_item_count`	items must be an array of 1 to 25 objects Returned before settlement; you are not charged.
400	`invalid_item`	each items entry must be a JSON object Returned before settlement; you are not charged.

Related tools

Rome IV Child CVS — Apply the Hyams 2016 Rome IV H1a child/adolescent cyclic vomiting syndrome diagnostic criteria and return whether the published child CVS box holds (rome_iv_child_cvs).
Rome IV child FAP-NOS — Apply the Hyams 2016 Rome IV H2d child/adolescent Functional Abdominal Pain NOS diagnostic criteria and return whether the published FAP-NOS box holds (rome_iv_child_fap_nos).

Payment

Unpaid requests return HTTP 402 even if query parameters or POST items are missing or invalid, so CDP and agents can index the path. After a PAYMENT-SIGNATURE, invalid params return HTTP 400 JSON before settlement. magent does not charge. Fix the params, then request a new 402 quote for that complete URL. Catalog misses (empty matches, found=false) are valid paid 200s. Unpaid valid requests return HTTP 402 with a base64 PAYMENT-REQUIRED header. HTTP 503 is not a new quote: retry the same PAYMENT-SIGNATURE. Full handshake and shared payment errors: Payments. Stdio MCP: /docs/mcp.

Guarantees

HTTP 402 is unpaid, including a missing query. After PAYMENT-SIGNATURE, invalid parameters return HTTP 400 before settlement. You are not charged. HTTP 402 never includes the tool JSON.
exact: settlement finishes before the tool (paymentFlow upfront). batch-settlement: verify/deposit before the tool; chargedCumulativeAmount commits after HTTP 2xx. Uncertain or failed settlement fails closed (HTTP 503). Retry the same PAYMENT-SIGNATURE.
HTTP 402 is unpaid only. Do not sign a second authorization because of a 503.
Execution is timeout-bounded and concurrency-capped.
Calculator inputs are stored encrypted for allowlisted operators (Magent Console). They are not in public logs, SSH lookups, catalog, or rollups. Request logs store path without query.