You can combat the vicious cycle caused by atopic dermatitis — aka eczema, a condition in which scratching leads to more itching — with simple but effective methods and treatments. Tanya Trevett, who ...

Have you ever wondered why scratching sometimes makes itching even worse? The neurotransmitter serotonin has been fingered as one troublemaker as the brain tries to control pain caused by scratching.

Dr. Gil Yosipovitch is a leading scientist in the field of itch. He says he hopes to gain more respect for the debilitating power of chronic itch — and to get more doctors on the search for a cure.

DAVE DAVIES, BYLINE: If you think itch is no big deal, it's probably because you've never had severe chronic itch. You might think, just scratch it and stop complaining. But our guest, Dr. Gil ...