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Knee Pain and Problems Brief anatomy of the knee The knee is a vulnerable joint. It bears a great deal of stress from everyday activities, such as lifting and kneeling, and from high-impact activities, such as jogging and aerobics. The knee is formed by these parts: Tibia. This

Molluscum Contagiosum in Children What is molluscum contagiosum in children? Molluscum contagiosum is a viral skin disease that causes small pink or skin-colored bumps on your child’s skin. It is not harmful and usually does not have any other symptoms. The virus is inside the

Cholesterol in the Blood Facts about cholesterol Cholesterol is a fat-like, waxy substance that can be found in all parts of your body. It helps your body make cell membranes, many hormones, and vitamin D. The cholesterol in your blood comes from 2 sources: the foods you eat and

Cholesterol, LDL, HDL, and Triglycerides in Children and Teens What is cholesterol? Cholesterol is a fat-like, waxy substance. It can be found in all parts of your child's body. It helps make cell membranes, some hormones, and vitamin D. The cholesterol in blood comes from 2

Premenstrual Dysphoric Disorder (PMDD) What is premenstrual dysphoric disorder (PMDD)? Premenstrual dysphoric disorder (PMDD) is a much more severe form of premenstrual syndrome (PMS). It may affect people of childbearing age. It’s a severe and chronic health condition that needs

Major Depression in Adolescents and Teens What is major depression? Major depression, also known as clinical depression or unipolar depression, is classified as a type of affective disorder (also called mood disorder) that goes beyond the day's ordinary ups and downs, and has

Breast Cancer: Introduction What is cancer? Cancer starts when cells in the body change (mutate) and grow out of control. Your body is made up of tiny building blocks called cells. Normal cells grow when your body needs them, and die when your body doesn't need them any longer

Hypoparathyroidism in Children What is hypoparathyroidism in children? Hypoparathyroidism is when the parathyroid glands don’t make enough parathyroid hormone. The parathyroid glands are four tiny glands on the back of the thyroid gland. The hormone they make helps manage levels

Contact Dermatitis What is contact dermatitis? Contact dermatitis is a reaction that happens after your skin comes in direct contact with certain substances. The substances may be: Irritants. These cause direct skin irritation and inflammation. They are the most common cause of

Medical Genetics: Types of Genetic Changes The human body has about 20,000 different genes in each cell. Genes are located on chromosomes, which are stick-shaped structures in the middle of the cell (nucleus). Each cell usually has 46 chromosomes grouped in 23 pairs. Each gene