Raising a kid is a series of crash courses — from clipping teeny-tiny fingernails to defusing tantrums, you name it. And when your little one has eczema, it can feel like taking a class in which you’re (somehow) both the student and the teacher. When my older daughter first started showing signs of eczema as an infant in the form of itchy, rashy skin, I didn’t think it was that big a deal, mostly because no one in my family had it. But now that I’m three years in, I’ve learned that helping manage my daughter’s eczema isn’t just a matter of slathering on lotion and calling it a day. There’s a l...