I don't have atopic dermatitis, but as someone that has stupidly sensitive skin and is always dealing with skin issues, I feel your pain! :/ As women with the pressures we face, having skin problems can really hurt your self-esteem, but as the barrier to between our body and the outside world, it can be tricky to deal with all the factors that may be causing it!
COUPLE OF LOW COSTS THOUGHTS-
DETERGENT AND SOAP: We need to protect our skin from outside factors like harsh weather and the many chemicals we encounter everyday - the detergent you're using for your laundry and the soap your using to wash with are two important things to look at. I'd recommend switching to a gentle, fragrance-free detergent made for sensitive skin (most detergent brands carry a sensitive-skin version of their product) and also switching to a gentle,natural brand of soap without any fragrance as well.
BATHING: Your skin is already irritated, so be gentle with it. Use a gentler, fragrance-free soap, water that isn't scalding hot and don't scrub too hard.
SUNSCREEN: To combat harsh weather, I use a make-up with sunscreen built into it and I put on a good sunscreen whenever I go out. (Yes, it's kind of a pain, but so are sunburns, skin cancer and premature aging!)
BODY MOISTURIZER: I'm also a lotion fanatic - I can't stand the feeling of having dry skin so I make sure to always have some on hand, but reading a little bit about atopic dermatitis, it looks like this will be really key for you. The most effective time to moisturize is 3 minutes after bathing, because actually moisturizers cannot add moisture to your skin - they can only lock in the moisture you already have there!
As for what type to use, according to experts, you'll want to go for either an ointment, a cream or body butter type moisturizer. Lotions tend to be mostly water and what you need is oil. It's also recommended that you reapply periodically throughout the day to keep the barrier up and moisture locked in.
FACIAL MOISTURIZER: For my face, I put on a gentle, oil-free facial moisturizer every night before I go to bed. I like Aveeno's Calming Relief with chamomile because it doesn't make me break out and I've noticed a significant improvement in my skin since I started using it! It's a little on the pricy side, but it will last forever and you don't want to put the same sort of lotion you use on your body, on your face.
CORTIZONE CREAM: Because atopic dermatitis strongly tied to allergies, I'd also add a cortizone cream to your skin care regimen. There are many good generic brands that are a little less pricy than the big names.
DIET: According to PubMed, though atopic dermatitis is not caused by allergies, it is strongly linked to allergies and becomes worse with each exposure to an allergen. For children (who the condition is most common in), they recommend avoiding allergenic foods and they mention eggs in particular.
To offer my own insight into this - I know eggs are one of the top 8 most common foods people have immune reactions to, but that gluten (from wheat products) and lactose (from milk products - my buddy, Laura actually has an awesome blog on the subject here - http://www.smartlivingnetwork.com/b25275) intolerance can cause skin issues as well, so food intolerance or sensitivity may be something worth looking into. (But of course, consult your doctor before taking on any drastic sort of elimination diet because without care they can lead to nutrient deficiencies.)
Another thought worth mentioning when it comes to diet, would be to make sure you are drinking plenty of water and are getting healthy fats from foods like avocado and olive oil. Jessica Corwin (a dietitian on here) has a some more tips on eating for healthier skin here: http://www.smartlivingnetwork.com/b27266.
Hope this helps and your skin starts cooperating with you soon, DJ! Definitely check back in and let us know how you're doing. I'm sure there are other people out there dealing with atopic dermatitis that would love to hear what you've tried and if it worked!