Radiation - (ra-di-a-tion)
The treatment of disease (especially cancer) by exposure to a radioactive substance
Rash - (rash)
Breaking out (eruption) of the skin
Re-pigment - (re-pig-ment)
Renewed pigmentation; appearance of colour where it was lost earlier
Reflux - (re-flux)
An abnormal backward flow of body fluids
Relapse - (re-lapse)
Deterioration in health; the return of signs and symptoms of a disease after a patient has been in remission for some time
Remission - (re-mis-sion)
Symptom-free period during the course of a disease
Rhinitis - (rhi-ni-tis)
An inflammation of the mucous membrane lining the nose