Features of patients presenting with thyrotoxic periodic paralysis
| Age/sex/race | Initial serum potassium levels (mmol/l) | Free T4 (pmol/l)* | TSH (mU/l)† | Symptoms and signs of thyrotoxicosis | Recurrences | Aetiology of thyrotoxicosis | |
|---|---|---|---|---|---|---|---|
| *Reference range=10.30–31.00 pmol/l; †reference range=0.5 to 5.0 mU/l; ‡lost to follow up. | |||||||
| 1 | 37/M/Filipino | 2.0 | 53.84 | <0.06 | No | 2 episodes within a month of diagnosis | Graves' disease |
| 2 | 36/M/Malay | 2.4 | 31.66 | <0.06 | No | 1 episode within a month | Solitary toxic adenoma |
| 3 | 27/M/Chinese | 1.8 | 51.00 | <0.06 | Yes | 1 episode within a month | Graves' disease |
| 4 | 21/M/Chinese | 2.0 | 34.88 | <0.06 | Yes | Nil | Graves' disease |
| 5 | 35/M/Thai | 2.1 | 26.49 | <0.06 | No | Nil | Unknown‡ |
| 6 | 49/M/Chinese | 1.9 | 47.91 | <0.06 | No | Nil | Graves' disease |
| 7 | 29/M/Chinese | 2.3 | 69.06 | <0.06 | No | 2 episodes, at 8 and 9 months after diagnosis | Graves' disease |