Elderly persons whose physical and emotional abilities or social support system is so reduced that maintaining a household or social contacts is difficult and sometimes impossible, without regular assistance from others. Healthy persons are usually not in this group until 75 years, and even then, many are not frail until they reach very late years.
Older persons with medical, nutritional, cognitive, emotional, or activity impairments. These deficits may limit their ability to live independently and predispose them to illnesses and the side effects of treatment.
Weakness, fragility, lack of balance or endurance, sarcopenia, immobility, and wasting.