The phrase "an extremely common problem" is correct and usable in written English.
It can be used when discussing an issue that is frequently encountered or widely recognized in a particular context.
Example: "Many people face an extremely common problem when trying to balance work and personal life."
Alternatives: "a very prevalent issue" or "a highly frequent challenge".
However, the quality factor of the Fano resonance in this metal structure is very low owing to optical losses in metal that cause significant broadening of the plasmonic resonances, which also is an extremely common problem in plasmonic nanostructures using metals [36 42].
Low back pain (LBP) is an extremely common problem affecting about two-thirds of people at some time in their life and listed as the second symptom-related reason for visiting a physician [ 1, 2].
Constipation is an extremely common problem in children accounting for 3% of all visits to paediatric outpatient clinics and up to as many as 25% of all visits to paediatric gastroenterologists in the United States [ 1, 2].
9 Coinfection with HIV and Mycobacterium tuberculosis (TB) is an extremely common problem: TB is the largest single cause of death in HIV-positive individuals and, in areas of high prevalence, it is the most common coinfection in HIV-positive children.
The extent to which these effects apply to the clinical situation has yet to be determined, but given that acidosis is an extremely common problem in the intensive care unit, and immune function is of critical importance, efforts to elucidate these relationships are quite justified.
Although this extremely common problem can be caused by different beliefs in different people, there is one specific belief that anyone with this problem almost certainly has: "What makes me good enough is having people think well of me".
Despite sending in those documents, both were told at one point that they'd been denied because they hadn't sent in the required documents (another extremely common problem [9]).
Headache is an extremely common neurological problem.
Insomnia is an extremely common sleep problem.
Hypertension is an extremely common clinical problem in the Western countries.
Vitamin D deficiency is an extremely common health problem that affects up to 50%% of the general population during winter months in the Northern hemisphere [ 8].
