A person sick in bed is typically referred to as being "bedridden."
Medically speaking, a sick person is called a "patient" if they are under the care of a medical professional.
pediatrician
It is called a Corduct
A hypochondriac
They are called ill, sick, or diseased. In a medical setting the person is called "a patient" or "the patient".
When doctors try to keep a person from being sick it is called preventive medicine. A type of preventive medicine is a wellness visit where the patient has a complete physical to determine if any illness exists.
A person who heals sick and ill people is called a doctor.
First Aid: The help or treatment that is given to a injured or sick person before being cared for by medical professionals (eg. paramedics, doctors, etc), or before being removed to hospital.
This dream suggests that you are "sick with grief" over the loss of this person.
Some little germs can get in your body at and time if you get enough of it that is when you can get sick.
It is the duty of every Muslim to visit the sick and is one of the criteria of being a good human being. If this person happens to be an Imam, then he also should visit the sick.