{
  "data": {
    "__count": 1,
    "__licence": {
      "identifier": "CC-BY-4.0",
      "link": "https://creativecommons.org/licenses/by/4.0",
      "name": "Creative Commons Attribution 4.0 International"
    },
    "results": {
      "Date": "2026-06-23 07:53:50",
      "DisorderDisorderAssociation": null,
      "DisorderFlag": [
        {
          "Label": null,
          "Value": 1
        }
      ],
      "DisorderGroup": "Disorder",
      "ExternalReference": [
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "6205",
          "Source": "GARD"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": "Attributed code (ICD-10/ICD-11: The targeted code is assigned by Orphanet)",
          "DisorderMappingRelation": "NTBT (ORPHAcode is narrower than the targeted code used to represent it)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "G90.8",
          "Source": "ICD-10"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "0035586",
          "Source": "MONDO"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "10081974",
          "Source": "MedDRA"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "604775",
          "Source": "OMIM"
        },
        {
          "DisorderMappingICDRefUri": null,
          "DisorderMappingICDRefUrl": null,
          "DisorderMappingICDRelation": null,
          "DisorderMappingRelation": "E (Exact mapping: the two concepts are equivalent)",
          "DisorderMappingValidationStatus": "Validated",
          "Reference": "C0751381",
          "Source": "UMLS"
        }
      ],
      "ORPHAcode": 581271,
      "OrphanetURL": "http://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=en&Expert=581271",
      "Preferred term": "Cramp-fasciculation syndrome",
      "SummaryInformation": [
        {
          "Definition": "A rare genetic neurological disorder characterized by adult onset of peripheral nerve hyperexcitability causing painful muscle cramps and fasciculations in the limbs, hyperreflexia, stiffness, and muscle pain. Other hypersensitivity-hyperexcitability symptoms are asthma, gastroesophageal reflux, migraine, tremor, cold hyperalgesia, and cardiac conduction defects. Autonomic signs and symptoms, neuropathic pain, cognitive deficits, and anxiety are also observed."
        }
      ],
      "Synonym": null,
      "Typology": "Disease"
    }
  },
  "datasetCategory": {
    "lang": "en",
    "name": "Rare diseases and cross-referencing"
  },
  "parameters": {
    "path": {
      "ORPHAcode": 581271
    },
    "query": {}
  },
  "uri": "https://api.orphadata.com/rd-cross-referencing/orphacodes/581271"
}