Hi there Worrier - warning as this is a MASSIVE post. My DS (now 16 months) had terrible eczema from 2 weeks which ranged from dry patches to red raw 'wounds' under his arms, in his neck creases and behind his knees and we ended up at Great Ormond St under specialist.
You must definitely treat it - by keeping on top of it even when it is not there you manage it and keep it under control. Whenever I have stopped moisturising DS it has come back and I find the hot weather makes it worse. Once it is under control you'll find that you'll just need to moisturise your baby once after bath and it just becomes part of the routine. I was very worried int he early days that we would become slaves to some sort of 'creaming ritual' four times a day.
Can I list out my favourite creams for you all of which we were prescribed at 12 weeks but you can buy over the counter? We have seen lots of doctors and consultants now and have used lots of different things and it is good to know what works
Diprobase - you know it. Quite a thick white emollient which I use in colder weather. I don't really like the smell of it as it is a bit chemically and prefer....
Cetraban - again, thick white cream like Diprobase but no smell
Doublebase - really light and non greasy. I love it. I use this when the eczema is hardly there.
Epaderm - this is brilliant and people swear by it but it is like a thick vaseline cream and comes in a pot which the dermatologist at GOS said she did not like as your hands can introduce bacteria into the pot which you then transfer onto the baby and eczema can become infected (when you use antibiotics). She does really rate the cream though. When I use this I always wash my hands first and then put DS in an all in one sleep suit as it is very greasy. Excellent though
These are classic eczema creams that the consultants prescribed and you can buy small tubes over the counter (as well as great big dispenders) to find one you like and your baby responds to. I cream DS up just once a day now after bathtime and use one of the four. I just wanted to add that both consultants we have seen have advised not to use Aqeous cream as it can make eczema worse. I hesitate before writing this as you have obviously been prescribed it and the last thing you need is some stranger giving you conflicting advice but it is good to be aware of these things. I always use Doublebase on DS face.
Lots of people like Aveeno or even better Aderma (french equivalent of Aveeno which is actually available on prescription in France for eczema but is sold as a beauty cream over here) both amazing and both based on oats (very very good for eczema - you can put a tied muslin of porridge oats in the bath). GPs will prescribe you Aveeno though I found my tube had to odd bit of grit (a bit of aot husk I think) in it which was awful when rubbing into delicate skin.
If you ever go to the States they sell Aveeno baby product in the pharmacies there - a lovely soap and bubble bath made for children with eczema so worth stocking up on
We also use a bath emollient - Oilatum or current favourite Balneum which is made out of soya oil. It really helps keep DS soft.
A consultant at C&W prescribed Dermol 200/500 lotion to be used as a soap - when they get older and their poo is a bit stickier you want to use a soap to make sure they are nice and clean and we massage this cream into DS before bath then wash it off.
If you baby's eczema is infected you can use the Dermol 500 bath oil as it has an antibacterial agent in it.
In terms of medicinal treatment DS's eczema got so bad we had to use pretty heavy duty steroid creams - Sinalar 1 in 4, Eumovate and where it was not so bad just a 1% HC cream
Then when we changed from GOS to C&W the consultant there prescribed a fairly new treatment cream called Protopic which apparently has no skin thinning risk like HC cream and can be used continuously rather than for short bursts. It is brilliant and can be used on the face but DS only saw that doctor at 12 months so I don't know if it is suitable for a tiny baby. Worth asking about.
I slap one of these treatment creams on the minute I see those tell tale red dots on his torso or dry patches on his legs. Once they have calmed down it is back to just moisturising again.
Massive long post but wanted to do a big long list of products we have had experience of. We have found that over time we have become more knowledgeable of the products available than our GPs who are often very loathe to treat babies with eczema because steroid treatment can be controversial but both consultants have said it is more irresponsible not to treat and to let the eczema flare up and cause unnecessary suffering and potential scarring then to deal with it in a short sharp shock of medication then keep under control with emollients
Way more advice/info than you asked for. Sorry!