de novo

new

diastolic blood pressure

the blood pressure when the heart rests between beats; the bottom number of a blood pressure reading

diplopia

double vision

diuretic

drug that causes an increase in urination to remove excess water in body

double-blind

neither you nor your doctor will know what medicine you are taking (this can be found out easily if necessary)

duodenum

beginning of the small intestine that is attached to the stomach

dysfunction

not working properly

dyspepsia

gas; upset stomach

dysplasia

abnormal cells

dyspnea

hard to breathe; short of breath