Table 1.
Diagnostic criteria for thyroid storm of Japan Thyroid Association and Japan Endocrine Society
| Essential criterion | Presence of thyrotoxicosis (elevation of free T3 and/or T4) | |
|---|---|---|
| Symptoms | 1. | Symptoms involving the central nervous system |
| 2. | Fever (≥ 38°C) | |
| 3. | Tachycardia (≥ 130/min) | |
| 4. | Symptoms of heart failure | |
| 5. | Gastrointestinal symptoms | |
| Cases definitely diagnosed as having thyroid storm | ||
| Satisfaction of the essential criterion and at least one of the following criteria | ||
| a. | Central nervous system symptoms + one or more of the other systems, or | |
| b. | 3 or more symptoms other than those of central nervous system. | |
| Cases suspected of having thyroid storm | ||
| a. | Satisfaction of essential criterion + 2 symptoms other than those of the central nervous system, or | |
| b. | Satisfaction of essential criterion is not confirmed, but positive history of thyroid disease + exophthalmos + goiter are present and criterion a or b for definite cases is satisfied. | |