1. a reason or situation that warrants worry, anxiety, or attention to a potential problem
The rising unemployment rate is a cause for concern among economists.
A taxa de desemprego crescente é um motivo de preocupação entre economistas.
2. something that should be taken seriously as it may have negative consequences
His recent health issues are a cause for concern for his family.
Seus problemas de saúde recentes são um motivo de preocupação para sua família.