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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

Dehydration What is dehydration? Dehydration means that you don’t have enough water in your body. The human body normally contains a lot of water. In fact, 50% to 60% of your body weight comes from water. It helps keep your body healthy and working well. Mild dehydration can

Tennis Elbow in Children What is tennis elbow in a child? Tennis elbow (lateral epicondylitis) is a painful issue caused by overuse. The tendons that join the forearm muscles to the outside part of the elbow get inflamed or damaged. This is usually caused by repeated use of those

Obesity in Children and Teens What is obesity in children and teens? Obesity is when a person has too much body fat. Without treatment, obesity can become a serious, long-term disease. What causes obesity in a child or teen? In many ways, childhood obesity is a puzzling disease

Stroke What is a stroke? A stroke, or brain attack, happens when blood flow to your brain is stopped. It's an emergency situation. Call 911 if you think you might be having a stroke or stroke symptoms. The brain needs a constant supply of oxygen and nutrients to work well. If the

Stomach and Duodenal Ulcers in Children What is a stomach or duodenal ulcer in children? An ulcer is an open sore (lesion). It’s normally found on the skin or mucous membranes. A peptic ulcer is in the lining of the stomach or the first part of the small intestine (the duodenum)

Actinic Keratosis What is actinic keratosis? Actinic keratosis (AK) is a rough, scaly spot or bump on sun-exposed skin. Most people with AK have more than one spot. AK is the most common precancer of the skin. Over time, it can develop into squamous cell skin cancer. Most

Candidiasis in Children What is candidiasis in children? Candidiasis is an infection caused by yeast called Candida. Candida normally causes no harm, and is found on the skin, vaginal area, and digestive system. But in some cases, it can overgrow. This can cause a rash, itching

Posttraumatic Stress Disorder (PTSD) in Children What is posttraumatic stress disorder (PTSD) in children? Posttraumatic stress disorder (PTSD) is a mental health problem. It can affect people of all ages. A child with PTSD keeps having scary thoughts and memories of a past event

About Cancer Clinical Trials What are cancer clinical trials? Cancer clinical trials are research studies with people. They may be done by government agencies, educational organizations, private not-for-profit groups, or commercial businesses. Trials are used to check how safe