Seated hamstring curl with weight machine

Rheumatoid Arthritis

Rheumatoid arthritis is a long-term inflammatory condition that can affect the joints and other tissues and organs in the body.

Vyvanse: Precautions for Use

A brief overview of precautions, drug interactions, potential for abuse and storage of Vyvanse.

• Vyvanse

Carotid angioplasty and stenting

Carotid angioplasty and stenting — See how this stroke treatment is done.

Calf raise with dumbbell

The calf raise targets the calf muscles in the legs. See how it's done.

Concussion

This animation shows the head receiving two impacts. One on the front, and one on the side from a boxing glove.

• Headache
• Pain