"Havana syndrome" meaning in English

{
  "etymology_text": "From the first encounter being reported in Havana, the capital of Cuba.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "Havana syndrome (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "parents": [
            "Entries with language name categories using raw markup",
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          "source": "w"
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        },
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          "name": "Terms with Finnish translations",
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          "source": "w"
        },
        {
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          "parents": [],
          "source": "w"
        },
        {
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          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Pathology",
          "orig": "en:Pathology",
          "parents": [
            "Medicine",
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "immaculate concussion"
        }
      ],
      "glosses": [
        "An illness of disputed cause, producing symptoms of vertigo, nausea, ear-popping, headaches, and traumatic brain injury, experienced by US ambassadors and agents abroad."
      ],
      "id": "en-Havana_syndrome-en-noun-PWYJwbGF",
      "links": [
        [
          "pathology",
          "pathology"
        ],
        [
          "vertigo",
          "vertigo#English"
        ],
        [
          "nausea",
          "nausea#English"
        ],
        [
          "headache",
          "headache#English"
        ],
        [
          "traumatic brain injury",
          "traumatic brain injury#English"
        ]
      ],
      "raw_glosses": [
        "(pathology) An illness of disputed cause, producing symptoms of vertigo, nausea, ear-popping, headaches, and traumatic brain injury, experienced by US ambassadors and agents abroad."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "medicine",
        "pathology",
        "sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "Havannan syndrooma"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "syndrome de La Havane"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "neuter"
          ],
          "word": "Havanna-Syndrom"
        }
      ],
      "wikipedia": [
        "en:Havana syndrome"
      ]
    }
  ],
  "word": "Havana syndrome"
}

{
  "coordinate_terms": [
    {
      "word": "immaculate concussion"
    }
  ],
  "etymology_text": "From the first encounter being reported in Havana, the capital of Cuba.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "Havana syndrome (uncountable)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English entries with language name categories using raw markup",
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        "English uncountable nouns",
        "Terms with Finnish translations",
        "Terms with French translations",
        "Terms with German translations",
        "Translation table header lacks gloss",
        "en:Pathology"
      ],
      "glosses": [
        "An illness of disputed cause, producing symptoms of vertigo, nausea, ear-popping, headaches, and traumatic brain injury, experienced by US ambassadors and agents abroad."
      ],
      "links": [
        [
          "pathology",
          "pathology"
        ],
        [
          "vertigo",
          "vertigo#English"
        ],
        [
          "nausea",
          "nausea#English"
        ],
        [
          "headache",
          "headache#English"
        ],
        [
          "traumatic brain injury",
          "traumatic brain injury#English"
        ]
      ],
      "raw_glosses": [
        "(pathology) An illness of disputed cause, producing symptoms of vertigo, nausea, ear-popping, headaches, and traumatic brain injury, experienced by US ambassadors and agents abroad."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "medicine",
        "pathology",
        "sciences"
      ],
      "wikipedia": [
        "en:Havana syndrome"
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "Havannan syndrooma"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "syndrome de La Havane"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "neuter"
      ],
      "word": "Havanna-Syndrom"
    }
  ],
  "word": "Havana syndrome"
}