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Psychosis is a mental and behavioral disorder in which a person has trouble telling the difference between what is real and what

The ductus arteriosus is a blood vessel in a fetus that connects the pulmonary artery, which carries blood to the lungs, and the

Primary progressive multiple sclerosis is a form of MS in which the disease gets worse from the start. It occurs in a small number

The rotator cuff is a group of four tendons and their related muscles that cover the shoulder joint. The rotator cuff helps keep

Radiation therapy is the use of high-energy radiation, such as X-rays, to destroy cancer cells and shrink tumors. Radiation may

A rib fracture is a crack or break in one of the bones of the rib cage. A rib fracture is most often caused by a direct blow to

Range of motion is the degree of movement a joint has when it is extended, flexed, and rotated through all of its possible

The small intestine is a winding, tightly folded tube about 20 ft (6.1 m) long in adults. It is connected to the stomach on the

Babies normally are born with two soft spots (fontanelles) on their head: a large soft spot on the top and a small one on the back

Spasticity is a condition in which muscles are tight or stiff. At times the muscles may jerk or spasm uncontrollably. It can