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  » Medical Terms Glossary
Patients will find this glossary of medical terms very useful to explain complicated medical terminology.

Click on a letter to view the corresponding section of the glossary:

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Range of motion (ROM)
The ability of a joint to go through all its normal movements.
Rectal Prolapse
A condition in which the rectum slips so that it protrudes from the anus.
Rectum
The lower end of the large intestine, leading to the anus.
Reflux
A condition that occurs when gastric juices or small amounts of food from the stomach flow back into the esophagus and mouth.
Reflux Esophagitis
Irritation of the esophagus because stomach contents flow back into the esophagus.
Regurgitation
See Reflux.
Retinopathy
A disease of the small blood vessels in the retina of the eye.
Rhabdomyolysis
an acute disease of skeletal muscle
Rheumatic fever
An inflammatory illness that may follow streptococcal infection and damage the heart valves.
Rheumatoid arthritis
Inflammatory changes in the synovium, or joint lining, that result in pain, stiffness, swelling, and loss of function in the joints.
Rhinitis
inflammation of the nasal mucosa.
Risk factor
Anything that raises the chance that a person will get a disease.
Rotavirus
The most common cause of infectious (viral) diarrhea in the United States.