Separately, ADHD and asthma each have been associated with mood disorders. Are patients with both ADHD and asthma at an even greater risk?

The number of people with asthma has significantly increased over the last three decades. Different medical exposures during infancy may have something to do with the rising number.

Oral corticosteroids are a common treatment for asthma, but they often come with unwanted side effects. One recent study showed that another medication may help patients lower their corticosteroid dose over time.

The idea of adding a bit of bacteria to your or your child's body may sound creepy-crawly. But if it's bacteria that's good for you, that's exactly what probiotics are.

Exposure to an allergen in small doses enables some adults to adapt and breathe well again. With the help of two different techniques, the same may work for kids.

Prevention of allergies in children is a murky science. Some parents may add prebiotic supplements to baby formula in the hopes that the prebiotics could reduce allergy risk.

People with asthma and allergies often have to take medication to stop their sneezing, itchy eyes and running noses. There’s new evidence to suggest an allergy treatment used in Europe could help prevent these reactions before they start.

Children born outside of the United States have lower allergy rates than US-born children. But now researchers have found that foreign-born children's allergy risk changes the longer they live in the US.

For people with environmental allergies, the air they breathe can trigger reactions – even during sleep. Hypoallergenic mattress and pillow covers work for some but not all.

Phthalates are substances used to make plastic more flexible. They are contained in a number of items from personal care products like shampoo to flooring, electrical cords and toys.