When you buy through our links, Business Insider may earn an affiliate commission. Learn moreAmazon/Business InsiderRedness, dryness, scaly patches, and itchy rashes — these are just a few of the not-so-fun symptoms of eczema, also known as atopic dermatitis. It's a pretty common condition: in fact, 31.6 million Americans (about 10% of the population) have some form of this skin condition.