Hi L.,
I am 30 and have had a severe case of eczema all of my life (my mom says it was diagnosed at 3 mos). I read through all of the responses and you were given some good advice, so I won't repeat those. Just a couple of things I wanted to add:
* Ask your pediatrician for a referral to a pediatric dermatologist. They will be more on top of the newest research, products, etc when it comes to eczema. For example, while I was always told to bathe infrequently, I understand that some doctors now believe that frequent baths are more beneficial.
*After you bathe Sean, do not rub him dry with a towel. Pat dry only where you must and IMMEDIATELY slather on a thick cream. I can actually feel my skin drying out after a bath until I get cream on it, so it is essential to apply it before his skin dries.
*I saw that you didn't have luck using Eucerin, which is the cream I prefer, but whatever you use, steer away from the thinner lotions and lighter creams that absorb into the skin quickly - it just gets dry again.
*One possible reason for his skin getting worse is the weather. My skin becomes even more dry, itchy, and cracked as soon as we put the heat on in the house. If you don't have a humidifier on your heating unit, you might check into getting one, or at least run a humidifier in Sean's room at night.
*Someone mentioned the cellophane wraps. My mom did this to me when I was young, and from what I remember, it worked to hold moisture in but was very uncomfortable to sleep in. There's gotta be a better way. One thing I can suggest is to put soft cotton mits or socks on his hands to keep him from scratching at night, as well as to hold moisture in if his hands/arms are problem areas for him. Tube socks work well. Slather on the cream first.
*NO FABRIC SOFTENER. None. Zip. Zilch. My dermatologists over the years have told me that using a fabric softener is one of the worst things you can do to your skin, eczema or not, but especially those with zemers. I've seen these little plastic balls that are chemical free that are supposed to work in the place of softeners, but I haven't tried them yet.
*You could try Pampers Sensitive baby wipes. They're fragrance free and are a lot softer than Huggies. Also see if changing diapers makes a difference. My kids broke out to Pampers Baby Dry, but were fine with Pampers Swaddlers/Cruisers. Something about the chemicals they put in the Baby Dry, I guess.
*A lot of people with eczema also have allergies and asthma, so be on the lookout for symptoms of these developing. Most pediatricians don't recommend allergy testing in young children, but you can treat him as if he does, just to be safe. For example, if he's outside for any length of time, particularly when the pollen counts are high, bathe him, change his clothes, etc. Do not expose him to wool. Change the sheets on his bed often, and get one of those mattress covers that prevents dust mites. Do not have stuffed animals in his room, and definitely not in his bed. Avoid exposing him to peanuts and tree nuts as long as possible - I've read until at least age 4 or 5 (I have a severe allergy to tree nuts, which is supposedly related to the eczema and asthma as well). Watch how he reacts to animal exposures - hives, watery eyes, runny nose? Eating citrus fruits, especially oranges, makes my skin breakout. Avoid fragrances in the products you use on him, but don't forget about those that you use yourself and therefore expose him to. Keep one of his blankets between him and others that hold him to limit exposing him to their perfumes, detergents, lotions, etc. Allergies ALWAYS make my eczema worse.
*Don't know if you plan to have more children or not, but you might consider breastfeeding if you do. They say its the best thing a woman can do to avoid severe cases of eczema, allergies, and asthma for those that have family histories. My 4 year old has a very mild case of asthma, but nothing like what I had when I was young - I nursed her for a year. My 7 month old developed some skin problems when she was 2 1/2 months old that the pediatrician diagnosed as seborrhea, but said could develop into eczema. Now five months later, she isn't showing any more signs of these skin problems. I plan to nurse her for at least a year as well. I can't say for sure whether these ailments are better because of the breastfeeding, but I believe they are.
Good luck, and I hope you're able to get Sean's skin under control soon! Let us know what works and what doesn't.
J.