"worrisome concern" is a correct and usable phrase in written English.
You can use it when describing a situation that causes you worry or anxiety. For example, "The governor's budget plan was a worrisome concern to many local residents."
Bacterial chemo-resistance is a worrisome health concern worldwide today [ 1- 3].
A particularly worrisome gap concerns the Arabic language.
Even more worrisome, student concerns about debt are exacerbating the nation's physician shortage.
However, accumulating evidences suggest the emergence of worrisome issues concerning the long-term fate of prosthetic grafts as large vessel replacement.
Developers "took a situation that was of concern and worrisome, and escalated it to a crisis," said Christine C. Quinn, a City Council member who has taken up the cause of compatible zoning.
This is a notch more worrisome than the "minimal concern" about these effects in the outside panel's report.
The two-sided management of Timbuktu by the Islamists indicated a division within the ranks of the rebels, Maiga said, but it also suggested a somewhat worrisome truth for Westerners concerned with the battle of ideas against radical Islam: Had they treated the people better, the jihadists might have won more popular support for their strict version of Islam.
The emergence and spread of drug resistant Salmonellae of both human and animal origins are global concerns and worrisome in countries where the risk of infection is high and treatment options are limited.
Those voters going against the grain in the microcosm of gun enthusiasts cite economic and health care concerns as more worrisome than the stability of their right to bear arms.
