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Autism Spectrum Disorder in Children What is autism spectrum disorder in children? Autism spectrum disorder (ASD) is a problem that affects a child’s nervous system and growth and development. It often shows up during a child’s first 3 years of life. Some children with ASD seem

Conduct Disorder in Children What is conduct disorder in children? Conduct disorder is a type of behavior disorder. It’s when a child has antisocial behavior. They may disregard basic social standards and rules. They may also: Be irresponsible Skip school or run away (delinquent

Oppositional Defiant Disorder (ODD) in Children What is oppositional defiant disorder (ODD) in children? Oppositional defiant disorder (ODD) is a type of behavior disorder. It's mostly diagnosed in childhood. Children with ODD show a pattern of uncooperative, defiant, and hostile

Anatomy and Function of the Heart Valves What are heart valves? The heart has four chambers: two upper chambers (atria) and two lower chambers (ventricles). Blood passes through a valve before leaving each chamber of the heart. The valves prevent the backward flow of blood

Urinary Tract Infection (UTI) in Children What is a urinary tract infection (UTI) in children? A urinary tract infection is inflammation of part of the system that takes urine out of the body. It’s caused by bacteria. The urinary tract includes the 2 kidneys. They remove liquid

Sprains and Strains in Children What are sprains and strains in children? Sprains and strains are types of injuries. A sprain is an injury to a ligament while a strain is an injury to a muscle or tendon. Ligaments and tendons are made of fibrous tissue. They connect different

Acne in Children What is acne in a child? Acne is a disorder of the hair follicles and sebaceous glands. Hair follicles are the areas around the base or root of each hair. Sebaceous glands are the tiny glands that release oil (sebum) into the hair follicles. The sebum moistens

Warts in Children What are skin warts in children? Warts on the skin are small, noncancerous skin growths. They are caused by a virus. Warts can spread to other parts of the body and to other people. What causes skin warts in a child? Warts are caused by a type of human

Juvenile Idiopathic Arthritis What is juvenile idiopathic arthritis? Juvenile idiopathic arthritis (JIA) is a form of arthritis in children. Arthritis causes joint swelling (inflammation) and joint stiffness. JIA is arthritis that affects 1 or more joints for at least 6 weeks in

Birthmarks What are birthmarks? Birthmarks are areas of discolored or raised skin that are seen at birth or within a few weeks of birth. Birthmarks may be made up of malformed pigment cells or blood vessels. Medical experts don’t know what causes birthmarks. But most of them are