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The thyroid is a butterfly-shaped gland that lies in front of the windpipe (trachea), just below the voice box (larynx). The

Asthma zones are part of your asthma action plan. The zones are defined by your symptoms, your peak flow, or both. Knowing what

Peak expiratory flow, or peak flow, is how much air you breathe out when you try your hardest. You measure peak flow with a peak

Adults with asthma At times, you may find it hard to manage your asthma and stay with your treatment plan. If you're having

A spacer is a chamber that can be attached to a metered-dose inhaler (MDI). The spacer may have a one-way valve that holds the

Wheezing is a whistling noise that occurs when the bronchial tubes, which carry air to the lungs, narrow because of inflammation

Contact lenses are small plastic or silicone discs shaped to correct refractive errors. After your doctor tests your vision, you

Corneal ring implants are clear pieces of plastic that can be surgically implanted into the clear, dome-shaped bulge at the front

Intermittent claudication is a tight, aching, or squeezing pain in the calf, foot, thigh, or buttock that occurs during exercise

Femoral-tibial bypass is a type of surgery. It redirects blood around narrowed or blocked blood vessels in your lower leg or foot