AIDS-Related Lymphoma in Children

AIDS-related lymphoma is a type of cancer called non-Hodgkin lymphoma. It grows in some people with AIDS. AIDS is a disease that weakens the immune system. AIDS raises the risk for long-term (chronic) disease, such as cancer.

Acquired Hypothyroidism in Children

Hypothyroidism is when the thyroid gland doesn't make enough thyroid hormone. The condition is more common in adults. But it’s the most common thyroid disorder in children. Not enough thyroid hormone leads to signs, such as slow growth, lack of activity, and poor performance in school.

Obesity in Children: How Parents Can Help

Most children become obese because of a poor diet, lack of physical activity, and other lifestyle issues. In rare cases, however, a child's excess weight may be because of a specific illness.

Phenylketonuria (PKU) in Children

Phenylketonuria (PKU) is a rare metabolic disorder. Children with PKU can't process an amino acid called phenylalanine. Phenylalanine is in many common foods.

Stress Fractures in Young Athletes

Stress fractures happen when muscles are too tired to take on the impact of exercise, and the bones absorb the added stress. When those bones become too strained, they develop a tiny break known as a stress fracture.

Eating Disorders and Young Athletes

Playing competitive sports can boost self-esteem and teach teamwork and leadership lessons. But sometimes being on a team that focuses too heavily on performance--or appearance--may trigger an eating disorder.