Medical term for the manic phase of bipolar disorder. In everyday language, 躁状態 (そうじょうたい) is also used.
Symptoms of mania include abnormally elevated mood and hyperactivity.
From 躁 (そう, 'manic') + 病 (びょう, 'illness'). The character 躁 is composed of 足 (foot) and 喿 (a phonetic component suggesting restlessness), reflecting the agitated nature of the condition.