The phrase "a difficult and uncertain" is correct and usable in written English.
It can be used to describe a situation or condition that is challenging and lacks clarity or predictability.
Example: "The project was set against a backdrop of a difficult and uncertain economic climate."
Alternatives: "a challenging and unpredictable" or "a tough and ambiguous".
However, appropriate management of DHF patients remains a difficult and uncertain challenge.
Genetic testing and blood testing in 1 unilateral case were negative.CONCLUSIONS: Childhood-onset "unilateral RP" remains a difficult and uncertain diagnosis.
"In a difficult and uncertain environment, Renault remains on track to meet its 2012 objective," Chief Executive Carlos Ghosn said in a statement.
Manpower, the agency that employs many of the affected workers said: "We realise this is a difficult and uncertain period for all involved and can assure you we are working hard to support our staff during this time".
The reliability of prognostication is crucial, but is still a difficult and uncertain exercise.
"Right now the Daw Mill employees and their families are facing a difficult and uncertain future," he said.
In particular, for physicians and patients, figuring out the relationship between care provided and outcome is a difficult and often uncertain process, depending on many more factors than what the doctor may have recommended at a given visit.
Estimating historical exposures to a cohort for use in an epidemiological study is generally a very difficult and uncertain undertaking.
A long, difficult and uncertain diplomatic process was the best one could hope for, a certainly far better than the alternative.
They also suffer the significant material costs of being raised by unmarried parents, relegated through no fault of their own to a more difficult and uncertain family life.
Surely that should include recognition of the parental bond formed within a marriage a point Kennedy himself alluded to, in writing that denying same-sex couples the right to marry would mean their children would be "relegated through no fault of their own to a more difficult and uncertain family life".
