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Sunburn What is sunburn? Sunburn is a red, painful skin reaction that happens after too much exposure to ultraviolet (UV) light. UV light is a type of radiation in sunlight. The symptoms of a sunburn most often appear a few hours after sun exposure. They are often worst at 6 to

Uniparental Disomy: Prader-Willi Syndrome and Angelman Syndrome What is uniparental disomy? Chromosome pairs affect how our body works. Normally, a baby gets one copy of each chromosome pair from each birth parent. In rare cases, two copies come from the same parent. This is

Breast Self-Awareness Your breasts change as you go through different stages of your life. It's important to learn what is normal for your breasts. This is called breast self-awareness. The key to breast self-awareness is knowing how your breasts normally look and feel. This

Types of Hearing Loss in Children What are the different types of hearing loss? There are three main types of hearing loss. They are sensorineural, conductive, and mixed. These types of hearing loss can be present at birth (congenital). Or they can happen after birth (acquired)

Preventing Sports Injuries Exercise is good for the body. And with the correct safety steps, sports injuries can often be prevented. The quality of protective equipment—padding, helmets, shoes, mouth guards—has helped to improve safety in sports. But you can still be at risk of

Overview of Neck Masses in Children Neck masses (lumps) are common problems in babies and children. Some neck masses are present at birth (congenital). These result from abnormal formation that occurs in the early stages of a baby's development during pregnancy. Many neck masses

The Thyroid Gland Anatomy of the thyroid gland The thyroid gland is found in the front of the neck. It sits below the voice box (larynx) and on top of the trachea (windpipe). It has a butterfly-like shape. The small, 2-inch gland consists of 2 lobes, 1 on each side of the

Trinucleotide Repeats: Fragile X Syndrome What are trinucleotide repeats? DNA is the chemical that makes up your genes. It contains a "code" of 3-letter words known as codons or trinucleotides. Many genes normally contain trinucleotide sequences that repeat. These are called

Varicose Veins What are varicose veins? Varicose veins are enlarged, twisted veins. They can happen anywhere in the body. But they are more common in the legs. Varicose veins are not considered a serious health problem. But they can be uncomfortable and can lead to more serious

Beta Thalassemia in Children What is beta thalassemia in children? Beta thalassemia is an inherited blood disorder. This means it's passed down through a parent’s genes. It's a form of anemia. Anemia is a low red blood cell or low hemoglobin level. Hemoglobin is part of red blood