For now, scientists are still struggling to understand the nuances of chronic pain, which is notoriously hard to treat.

如今，科学家们仍然致力于分析慢性疼痛的细纹差别，而众所周知这种病痛是很难治疗的。

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Domesticviolence is still a chronic problem for countless women inrelationships with men.

家庭暴力仍是许多和男人一起生活的女性所长期面临的问题。

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This summer vacation, unfortunately, I came down with hoarseness due to certain reason. Worse still, it worsened gradually from acute pharyngitis to chronic one.

这个暑假很不幸我的喉咙由于某种原因变得嘶哑了，由急性咽炎变成慢性咽炎，久治不愈。

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Although the eczema on my face and body has cleared up now, I still suffer with chronic eczema on my hands, and have to put extremely strong steroid creams on them to control it.

BBC: NEWS | UK | Scotland | Tayside and Central | New eczema treatments on horizon

In parts of the world where childhood diseases are still common, these chronic ailments are rare.

ECONOMIST: Plagued by cures

The infrastructure still impresses voters in a country of chronic power outages.

WSJ: Pakistani Candidates Hop Parties With Little Resistance