"Confined to bed" is a phrase that describes a person's physical condition when they are unable to get up from bed due to an illness or injury. Synonyms for this phrase include bedridden, bedfast, immobilized, incapacitated, or helpless. These words can be used interchangeably to describe the same condition of being limited to one's bed with restricted mobility. Other related words include convalescing, bedrest, housebound, and infirm. These synonyms may be helpful in providing a more specific and accurate description of a person's medical condition, which can be useful for medical professionals when communicating with patients and their families.