痼こ疾しつ

noun

chronic disease; chronic illness

Formal or literary term for a long-standing, difficult-to-cure disease. In everyday speech, 慢性疾患 (まんせいしっかん) is more common.

• 彼かれは長なが年ねん、痼こ疾しつに苦くるしんでいる。

  He has been suffering from a chronic disease for many years.