Vulnerable people are at risk of receiving "poor or unsafe care" as pressures on care services take their toll, according to a new report.
The ageing population and the rising tide of patients who suffer from complex or multiple illnesses mean that some care providers are struggling to provide "person centred" care, according to the Care Quality Commission (CQC).
Pressure on the care system is having an impact on the respect that patients are receiving in some areas, according to the State of Care report.
The report, based on evidence found from 13,000 CQC inspections, found that one in 10 NHS hospitals did not meet basic respect and dignity standards. And at 15% of 2,500 nursing homes there was a lack of respectful care.
Inspectors noted that 20% of 1,362 nursing homes and residential care homes and 15% of 258 NHS hospitals failed to ensure that the people in their care were given the food and drink they need or helped them to eat or drink.
The CQC also raised concerns about staff numbers. It found that 16% of 250 NHS hospitals did not have adequate staffing levels and a quarter of nursing homes failed to meet the CQC staff standards.
"These are challenging times for providers," the report states. "CQC continues to see many examples of organisations that meet these challenges and deliver an excellent quality of care. But it also sees others, across both health and social care, that are failing to manage the impact of these pressures effectively."
The CQC, which regulates health and social care in England, said that when it witnessed poor care, there were three main underpinning factors - a care culture in which the "unacceptable care becomes the norm", an attitude to care that is "task-based", not person-centred, and providers who try to manage with high vacancy rates or poorly deployed staff.
David Behan, chief executive of the CQC, said: "Our report highlights concerns we have that pressures on some services are leading to problems in the quality of care, keeping people safe, treating people with dignity and respect, and involving people in decisions about their own care. These pressures can not be used as an excuse to deliver poor care."
Health Secretary Jeremy Hunt said: "While there is much to praise about the NHS and social care today we still need to do much more to raise standards of care across the board. I've made it absolutely clear that quality of care needs to be valued as highly as the quality of treatment. And that there can be no hiding place for those providing poor care or sub-standard practice."