Join us at noon for a chat with Dr. Kate Puttgen, a pediatric dermatologist at Johns Hopkins Children's Center. She'll answer questions about all things skin: itchy eczema, acne, moles and more. Puttgen was featured in the Sun Magazine's Generation Rx feature, about top doctors under age 40. Can't make it then? Ask questions now, either via the Cover It Live widget below or by leaving a comment. You can also ask questions via Twitter by using the hashtag #sunmag.