e.target.name是company.position，您不能设置嵌套属性，例如obj["company.position"]，您必须将其拆分：

<input
  name="company.position"
  type="text"
  onChange={e => functions.setData(e)}
  value={data.company.position}
/>;

const handleStateChange = e => {
  e.preventDefault();
  const [section, key] = e.target.name.split(".");

  // section is : company
  // key is : position

  if (key) {
    // if you have nested keys to update
    setValues({
      ...form,
      [section]: {
        ...form[section],
        [key]: e.target.value
      }
    });
  } else {
    // if you're updating on the first level
    setValues({
      ...form,
      [section]: e.target.value
    });
  }
};

const nested = e.target.name.split(".");
    const [section, key] = nested; 
     if(nested.length > 2){
        let total = nested.length;
        let ultimo = nested[total-1];
        saveclinicHistory({
            ...clinicHistory,
            [section]: {//patient
                ...clinicHistory[section],
                [key]: {//address
                    ...clinicHistory[section][key],
                    [ultimo]:e.target.value

                }
            }
        });