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A burn is damage to your body's tissues caused by heat, chemicals, electricity, sunlight, or radiation. Read about the different types and treatments. READ MORE

Bullying is when a person or group repeatedly harms someone on purpose. Cyberbullying is bullying that happens through text messages or online. Both can cause lasting harm. Learn the signs of bullying, and how to help a child who is being bullied. READ MORE

Learn about how bruises, or contusions, form. They happen when you get a blow or injury that breaks the small blood vessels under the skin. READ MORE

The bronchi are two tubes that carry air to your lungs. Problems with the bronchi include bronchitis, bronchiectasis, and bronchiolitis. Learn more. READ MORE

When you have breathing problems, such as shortness of breath, it's hard for you to take in the oxygen your body needs. Find out what can cause this. READ MORE

Breastfeeding gives your baby the right nutrients and may protect your baby against some illness. Learn about all its benefits and how to breastfeed. READ MORE

Breast reconstruction can rebuild the shape of the breast after a mastectomy for breast cancer. Read about the types of implants, the surgery and recovery. READ MORE

Breast changes such as lumps, bumps, and discharge are common. Some causes can be aging, hormones, or medicines. Learn about symptoms and treatments. READ MORE

Breast cancer is a cancer that starts in the breast tissue, when cells change and grow out of control. These extra cells can form a mass called a tumor. READ MORE

A brain tumor is a growth of abnormal cells in the brain tissue. Learn the types of tumors, symptoms, how they are diagnosed and treatment options. READ MORE

Brain malformations is damage or abnormal development of the brain and nervous system. Starts long before a baby is born. Learn types and treatments. READ MORE

Brain diseases affect different functions of the body from memory, speech, thinking clearly, how well the different organs work, or even movement. READ MORE