Totally confused - please help re dairy allergy? (sorry long post)

[Tartanmam]

I'm looking for some advice about dairy allergy, my ds is 10.5 months old and had a reaction a few months ago to a muffin i'd made, we assumed it was either the egg or the buttermilk (i'd been very relaxed about allergies to that point as their is no history in the family) He'd had previous skin reactions to yogurt and philadelphia when he rubbed it on his face (v messy eater, blw) - red blotches with white spots but the HV said he probably just had sensitive skin, i decided not to give him any more dairy because it seemed easier but didn't think it was an allergic reaction.

When he had the muffin his eyes swelled up really badly and when i gave him piriton it calmed down. The HV was pretty convinced it was the egg he'd reacted to but i deicded to continue staying off the diary after that. Recently though hes been having butter and the occasional v v small bit of cheese and hes been fine so i decided it probably was the egg after all and this weekend while at my mums for tea i let him have a taste of my cheesecake (i know in hindsight i can't believe i thought it would ever be a good idea). Within a few minutes his face was really blotchy where he'd been rubbing with his messy hand and his eyes started to swell up. Gave him piriton again but now i'm confused, could he be allergic to the philadelphia or double cream in the cheescake but not to cheddar cheese and butter?

Also, i'm scared to try him on egg again as i keep reading that the reactions get worse, but i don't even know for def if he is allergic, does anyone have any advice on reintroducing foods, should i do it in the health centre car park?

Sorry this is so long but the area of allergies is so grey and i've never had to deal with it before.
Thanks for reading.

at rice milk and soya milk!!!

Oh they really are foul!! I even tried oat milk which is OK on cereal (makes everything taste like porridge) but they're all rubbish in tea and coffee!!!!!!

DH quite likes a vanilla soy latte from starbucks. He isn't a die hard milk addict like me though. My mum keeps trying to get me on to soya milk and rice dream (rice nightmare more like!) - she says once you are used to it it's ok. I don't want to get used to it, I want to like it straight away or not at all

Thanks everyone, i'm still bf and haven't cut anything out of my diet (allthough i don't have much dairy anyway). Do you think i should eliminate stuff from my diet or would i be ok since its never been an obvious issue until now? Got an appointment with the GP so at least it'll be noted on his proper records that hes had a reaction. My main fear is that since he reacted so quickly last time the next reaction could be worse and i don't want to risk that, but at the same time does it make a difference if i have a little bit of milk in my tea?

Tartanman- Dairy is notorious for producing colic but I'm not sure how! DS gets a sore tummy and got lots of colic before I read a book called 'The Womanly art of breastfeeding' by the LLL. It had a huge chapter about allergies etc. You could try contacting your local LLL to see they have a copy you can borrow...its the only time I've seen any real information about my lactose intollerance effecting DSHV didn't know anything about and when I told her she sdai "Oh I must remember that for future", not her fault really but frustrating!!!