Ten to 15 percent report chronic symptoms. That’s a lot of irritablenerves.

根据国家睡眠障碍研究中心的数据，美国成年人中的百分之三十到四十在一年之内有过间歇性失眠经历，百分之十到十五患有长期失眠症状，神经过敏的人可是相当不少。

youdao

I developed serious arthritic symptoms and chronic sinusitis.

我有了严重的关节炎症状和慢性鼻窦炎。

《柯林斯英汉双解大词典》

Those complaints include chronic sinus congestion, constipation, and even symptoms resembling asthma.

这些投诉包括慢性窦堵塞，便秘，甚至哮喘症状相似。

youdao

Other symptoms include wheezing, a chronic cough producing yellow mucous, and frequent respiratory infections.

VOA: standard.2010.06.21

Its report found "no conclusive link" between the water poisoning incident and the chronic symptoms and diseases reported.

BBC: Lowermoor treatment works, Camelford

Dr Golomb says that many studies have found that exposure to AChEis is linked to the kind of chronic symptoms that the sick veterans report.

ECONOMIST: Was Gulf-war syndrome caused by chemical poisoning?

In 10 patients tested by Dr Shoemaker, cholestyramine doses managed to correct the vision problems and end other chronic symptoms, some of which had been present for 10 years.

BBC: Fish food poisoning breakthrough