Hi Poppy,
Sorry but I don't come on MN everyday but all the other posts have been so helpful by the looks of things.
Just to reiterate though we had no tests as such, when it comes to the non IgG allergy diagnosis, good old history, history, history! There was no teaching of allergies affecting eczema from what I remember, even the normal dermatologists often deny the relationship just like other posters have said. I think that was possibly the hardest part, being a medic and being completely oblivious to what was happening to my baby was from what I was feeding her.
Vitalite is also cmp free. There is lots out there for dairy free options, it's just the first month or two that feels a bit impossible because it's all new. Redwood do a yoghurt called 'wot no dairy' made from pea protein. Our holland and barret don't do it but I order a lot of things from goodness direct. Although there are lots of soya alternatives to dairy, Helen Cox told us up to 50% of cmp allergy sufferers are also allergic to soya so do be careful when using soya in your diet.
In terms of transferring to a hypoallergenic formula we were told after 1 year is the main problem, at 7 months you should be ok really.
For yourself you can buy things like dairy free chocolate, dairy free chocolate spread, egg and dairy free cakes etc. Plamil do dairy free chocolate, the cake crusader do yummy cakes and it's very handy for things like parties when your DS is a bit older and will want what everyone else is having, naturally!
The majority of non IgG allergy sufferers will grow out of it, along with soya and egg (both also common in eczema sufferers) My DD is 18 mo and we were told between 2-4 yrs is the common age to grow out of it, although it obviously varies. They would do a trial of reintroduction at certain stages when DD was much better, which I think is the norm.
Anyway, I'm really glad to hear your DS is already so much better, as you said it shows how much the diet affects eczema. Otherwise we also saw a specialist eczema nurse who was amazing and she basically told us main aim is frequent emollients use (do this in a downwards direction to prevent folliculitis) high dose steroids that you continue and wean off when skin is better (we use synalar for 2 weeks od, 2 weeks alternate days and then prn) and bath everyday for 10 mins in warm bath, first apply emollient such as dermol lotion all over, then put DC in bath and add oilatum, and avoid all other products. I use epaderm to wash DD's hair with instead of shampoo (it does foam up if you use enough water.) Also you want to try to have as little dust mite as possible, obviously can't completely eliminate it in the house. But wash bed sheets/sleeping bags every 3 days at 60 degrees, washing powder makes no difference, just use loose powder and use a bit less than normal or add an extra rinse cycle at the end. Same with all of the clothes. Any soft toys you can't wash at 60 degrees freeze overnight in plastic bags. I only put DD in cotton and there's a website chalked cotton comforts, eczema clothing, that do body suits with mittens as part of the woke bodysuit and they can be washed at 90 degrees, they do lots of other useful products. At the minimum keep the layer closest to his skin cotton. No let's if possible, lots of dusting especially in bedroom, washing curtains or having blinds instead, washing rugs and deep cleaning carpets when possible. If you have been to a house with pets or a farm or even the park, wash hands and face as they may have pollen, fur etc on them. Sorry if too much information!
The allergy masterclass was fascinating, I went to find out about DD's peanut allergy and ended up finding the answer to all of DD's problems which had been dismissed by 2 different teams of specialists, one being an allergy specialist! Briefly our DD was 14 mo at the time and had lost 1 kg in weight and dropped below 0.4th centime, struggling with food other than mash or purred food by gagging, choking, and vomiting several times a day, and lots lots more that seemed trivial as individual symptoms but were answered by the presentations. Anyway turns our DD has eosinophilic oesaphagitis which I'd never heard of before! The talk was run by Adam Fox (St Thomas') Neil Shah (GOSH) and Helen Cox (Mary's Paddington) so if you see anything done by these consultants it really is worth going along.
Also did your DS have bad eczema before or is it all recent? I'm asking because there's something called the allergic march and the sensitisation to food is thought to happen through the skin so if your skin barrier is poor from a very young age then you are more likely to develop IgG allergies too. This is why the EAT study at Evelina, St Thomas' hospital are doing a trial into early introduction of potential allergens to reduce allergies and it is so far showing very good support for this theory. So if your DS did have bad eczema before be very careful when introducing allergeic foods. And don't expect an instant reaction, our DD had eaten peanut butter 3 times before her anaphylactic reaction on the 4th time.
I'm assuming you know that you accrue AL when you are on maternity leave, just thought I'd mention it if you didnt know. Also by the time your DS is 11/12 mo he will probably only be having 2-3 bf a day which you can do first thing in the morning, last thing before bed and one after midday nap when you are at home or hypoallergenic formula when you're not. If you get on with pumping then great, but I found out a bit too late so this is what I did. It is actually not that difficult to continue bf when working, especially part time. I only stopped at 15 mo because I became pregnant and had awful hypermemesis.
Sorry again for a very long post, I just hope it's of some help. Please do ask away anything you need to, MN is really great for this. I really hope things continue to improve for you all. :)