The weather. Food additives. Illness. Many things may set off your asthma symptoms. Here's a look at some common asthma triggers, and tips to help ease your symptoms.

If your loved one will use a wheelchair, you need to know about transfers. For safety's sake, learn how to help your loved one in and out of the wheelchair. One basic method is shown here.

Frequent and thorough handwashing is the best way to prevent infection.

Doppler ultrasound uses harmless sound waves to evaluate and create pictures of blood flow inside your blood vessels. This test can detect narrow or blocked arteries and veins due to an abnormality pressing on them or blood clots inside.

An inhaler is a pressurized sprayer that delivers a measured amount of medicine. Follow these steps if you're using an inhaler.

A TIA (transient ischemic attack) is an early warning that a stroke (also called a brain attack) is coming. A TIA is a temporary stroke. It causes no lasting damage. But the effects of a stroke, if it happens, can be very serious and lasting. Here are symptoms to watch for.

A bone scan is an imaging test that uses a special camera to form images of your bones. It is used to diagnose bone problems, such as fractures, cancer, infections, and joint problems such as arthritis. It is also used to check joint replacements.

A bone density study helps diagnose osteoporosis (bone thinning). Scans of your lower back, hip, or forearm are taken to measure the amount of calcium (density) in your bones. Calcium is the mineral that makes up your bones.

A barium enema is an X-ray exam of your rectum and colon. This test helps your doctor find problems, such as blockages or polyps.

You are scheduled to have surgery. The health care staff will try to make your stay comfortable. Use the guidelines below to remind yourself what to do before surgery.