Photodynamic therapy of the esophagus

Types of Headaches

A comparison of different types of headaches: cluster, tension, and migraine; their trigger points; and their symptoms.

Skyrizi: Uses, How It Works, and Common Side Effects

Living with chronic conditions can be challenging, but advancements in medicine are constantly offering new hope.

• Skyrizi

Simple squat and reach exercises with fitness ball

You can do many exercises with a fitness ball. See the simple squat and reach.

Triceps extension with weight machine

The triceps extension with weight machine targets the back of the upper arm. See how it's done.

Stroke

This animation shows a stroke resulting by an embolism travelling from an internal carotid artery and lodging within a cerebral artery in the brain.

• Stroke