"sick headache" meaning in English

{
  "forms": [
    {
      "form": "sick headaches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sick headache (plural sick headaches)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1852, Harriet Beecher Stowe, Uncle Tom's Cabin:",
          "text": "In very much this way Topsy’s training proceeded, for a year or two,—Miss Ophelia worrying herself, from day to day, with her, as a kind of chronic plague, to whose inflictions she became, in time, as accustomed, as persons sometimes do to the neuralgia or sick headache.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A migraine."
      ],
      "id": "en-sick_headache-en-noun-d10qEaAs",
      "links": [
        [
          "migraine",
          "migraine"
        ]
      ],
      "raw_glosses": [
        "(archaic) A migraine."
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "word": "sick headache"
}

{
  "forms": [
    {
      "form": "sick headaches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "sick headache (plural sick headaches)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with archaic senses",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1852, Harriet Beecher Stowe, Uncle Tom's Cabin:",
          "text": "In very much this way Topsy’s training proceeded, for a year or two,—Miss Ophelia worrying herself, from day to day, with her, as a kind of chronic plague, to whose inflictions she became, in time, as accustomed, as persons sometimes do to the neuralgia or sick headache.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A migraine."
      ],
      "links": [
        [
          "migraine",
          "migraine"
        ]
      ],
      "raw_glosses": [
        "(archaic) A migraine."
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "word": "sick headache"
}