English textbooks

What is Brugada syndrome? Brugada syndrome is a genetic disorder that can cause a dangerous irregular heartbeat. When this happens, the lower chambers of your heart (ventricles) beat fast and irregularly. This prevents blood from circulating correctly in your body.…

What is a bruise? A bruise is a collection of blood underneath the skin that is caused by an injury to an area of the body. The injury causes tiny blood vessels (capillaries) to break. Then blood leaks from the…

The importance of brushing The single best way to remove harmful plaque from teeth and gums is to brush teeth regularly and correctly. Plaque is a thin, sticky film loaded with bacteria. What is the correct way to brush teeth?…

Even before your child’s teeth have come in, it’s important to start mouth care. Using a damp washcloth or piece of gauze, gently rub it over your infant’s gums to help clean the mouth. Brushing your child’s teeth should begin when…

What is bruxism? Bruxism is the clenching or grinding of teeth. It’s the repeated jaw-muscle activity of the facial or chewing muscles. With bruxism, you grind or clench your teeth, or you may brace or thrust your jawbone (mandible). It’s…

What is Buerger disease? Buerger disease is one of many types of vasculitis. This is inflammation of small and medium-size blood vessels. Buerger disease causes a tightening, or a blockage, of the blood vessels in your feet and hands. When…

What is bulimia? Bulimia is a serious illness that causes severe problems with a person’s eating behaviors. It is marked by uncontrolled episodes of overeating, called bingeing. This is followed by purging with methods such as vomiting or misuse of…

What is bulimia nervosa in children? Bulimia nervosa is an eating disorder. It’s also called bulimia. A child with bulimia overeats or binges uncontrollably. This overeating may be followed by self-induced throwing up (purging). A child who binges eats much…

What is bunion surgery? Bunion surgery is done to reduce the pain and correct the deformity caused by a bunion. A bunion (hallux valgus) is a deformity of the bone or tissue around the joint at the base of the…

What is Burkitt lymphoma in children? Burkitt lymphoma is a rare, fast-growing, aggressive form of non-Hodgkin mature B-cell lymphoma (NHL). It’s a type of cancer that starts in white blood cells in the lymphatic system. It’s named for the doctor who…

What is burners and stingers syndrome in children? Burners and stingers syndrome is a type of sports injury. It’s a pain in the shoulder or neck that causes a burning or stinging feeling down an arm to the hand. It…

Chemical burns can occur when strong acids or alkalis come into contact with the skin and the eyes. Burns can also occur when a child inhales or eats these substances. Immediate care for chemical skin exposure If the…