"problems are aggravated" is grammatically correct and can be used in written English.
It means that the problems have become worse or more severe. Example: The company's financial problems are aggravated by the current economic crisis.
Nassau's problems are aggravated by its debt.
These problems are aggravated by the squeezes on corporate sponsorship and government funding.
These problems are aggravated by the limited predictive accuracy of models that do not allow reliable preclinical screening of candidate products.
These problems are aggravated by the sky-rocketing land values of the megacity Dhaka.
And often these long term structural problems are aggravated by globalization, world markets, economic restructuring and such recent trends in the world economy.
Armenia's economic problems are aggravated by a trade blockade imposed by neighbouring Turkey and Azerbaijan since the dispute over Nagorno-Karabakh.
Its problems were aggravated when the US began expelling thousands of refugees.
For them, those problems were aggravated by the risk of being overshadowed by their husbands, who worked in similar fields.
This research confirmed that musculoskeletal and other problems were aggravated by awkward, static postures, prolonged use without breaks, and carrying heavy computer bags (especially over one shoulder).
These and other problems were aggravated by a "bad organizational climate" within the institute, caused by "strong internal divisions and a vertical style of leadership".
His career problems were aggravated by addictions to drugs and gambling, which he wrote about frankly in his first memoir and its successor, "Been There, Done That" (1999).
