「頑疾」

(pos:名詞)
<explanation>
yue:難醫或者醫好耐都醫唔好嘅病症（量詞：種）
eng:ineradicable disease
<eg>
yue:多年嚟，佢積極對抗頑疾。 (do1 nin4 lai4, keoi5 zik1 gik6 deoi3 kong3 waan4 zat6.)
eng:For years he has been combating the ineradicable disease actively.