Medical

at death's door

- very near death
The sales manager was at death's door after his heart attack.
back on one's feet

- physically healthy again
My mother is back on her feet after being sick for two weeks.
black out

- to lose consciousness, to faint, to pass out
The football player blacked out after being hit by the other player.
break out in (something)

- to begin showing a rash or other skin disorder
I broke out in a rash after eating the shrimp at the restaurant.
breathe one's last

- to die
The man breathed his last after a long illness.
bring (someone) around

- to restore someone to health or consciousness, to cure someone
The medical workers were able to bring the man around after the accident.
bring (someone) to

- to restore someone to consciousness after anesthesia/hypnosis/fainting
We tried hard to bring the woman to after the car accident.
catch a cold

- to get a cold
I caught a cold last week and had to miss four days of work.
catch one's death of cold

- to become very ill (with a cold/flu etc.)
The little boy was told to be careful in the rain or he would catch his death of cold.
check-up

- an examination of a patient by a doctor
I plan to have my annual check-up next week.
clean bill of health

- a report or certificate that a person or animal is healthy
My doctor gave me a clean bill of health when I visited him last month.
come down with (something)

- to become sick with something, to catch an illness
My niece came down with a cold and was unable to visit me last week.
couch doctor

- a psychoanalyst or psychiatrist who puts his patients on a couch to talk to them
The man was sent to see a couch doctor because of his many problems.
a dose of one's own medicine

- the same treatment that one gives to others (usually this has a negative meaning)
We gave the boy a dose of his own medicine after he bullied us