types:
bulimic
a person suffering from bulimia
depressive
someone suffering psychological depression
dyspeptic
a person suffering from indigestion
epileptic
a person who has a common disorder of the central nervous system characterized by fainting and seizures
incurable
a person whose disease is incurable
invalid,
shut-in
someone who is incapacitated by a chronic illness or injury
patient
a person who requires medical care
valetudinarian
weak or sickly person especially one morbidly concerned with his or her health
hypertensive
a person who has abnormally high blood pressure
hypotensive
a person who has abnormally low blood pressure
hysteric
a person suffering from hysteria
index case
the earliest documented case of a disease that is included in an epidemiological study
inmate,
inpatient
a patient who is residing in the hospital where he is being treated
pyromaniac
a person with a mania for setting things on fire
outpatient
a patient who does not reside in the hospital where he is being treated
psychopath,
sociopath
someone with a sociopathic personality; a person with an antisocial personality disorder (`psychopath' was once widely used but has now been superseded by `sociopath')
vaccinee
a patient who has been vaccinated