@ankara-- Actually, if someone doesn't scratch the skin affected by eczema, it won't develop into crusts and bleeding blisters. Eczema is very itchy, this is the main eczema symptom and most people can't resist scratching. That's why the blisters show up and when they heal, the skin looks thick and crusty. It's important not to scratch skin with eczema. If the skin is not clean and if it's scratched, it can easily get infected which will make things much worse.