Detailed information on immune deficiency disorders in children, including Severe Combined Immunodeficiency, Common Variable Immunodeficiency, DiGeorge Syndrome, and X-linked Agammaglobulinemia

Detailed information on mold allergy, including possible sources of mold inside and outside the home.

Helpful information on helping your child follow a milk-free diet, including tips for reading food labels.

Detailed information on adolescent growth and development

Detailed information on adolescent mental health disorders, including schizophrenia, mood disorders, major depression, dysthymia, manic depression (bipolar disorder), teen suicide, anxiety disorders, generalized anxiety disorder, obsessive-compulsive disorder, phobia, post-traumatic stress disorder, behavior disorders, attention-deficit/hyperactivity disorder, conduct disorder, oppositional defiant disorder, eating disorders, anorexia nervosa, bulimia nervosa, substance abuse/chemical dependence, and adjustment disorders

A look at the 4 asthma severity levels.

For most children, the reaction to a sting is brief, with redness and swelling followed by pain and itching. Others may have an allergic reaction that is life-threatening. Read on for details.

Detailed information on allergy, asthma, and immunology

Detailed information on the immune system and immune disorders

Hives are a sudden outbreak of red, itchy, and swollen areas on the skin. They often happen as an allergic reaction from eating certain foods or taking certain medicines. Here's what you should know.