Peanut allergy in breastfed baby?

[kkalicekk]

6 month old has diagnosed CMPA.

Breastfed since birth - tried normal formula at around 2 months and he came out in hives and eyes swelled.

Have since been prescribed Pepti and Nutrimagen however reacted to both (blood in poo, sick, diarrhoea etc). On waiting list for dietician and pediatrician - in meantime exclusively breastfeeding. Have been completely dairy free for 4 months (and I am being incredibly careful).

I'm assuming he is still reacting to something in my diet - has improved since I eliminated milk from my diet however his poos are still incredibly mucasy and every now and then he'll have awful stomach pain and be very unsettled followed by an explosive poo which is more mucasy than normal.

I'm keeping a food diary however struggling to see what he could be reacting to - however the past 2 times he's been really bad I had a salad with peanut butter in the dressing.

Could he have a peanut allergy? Can't seem to find any information online regarding how a peanut allergy would present if consumed through breast milk.

Thank you!

In theory if your baby is very reactive it could be any protein that you eat and the commonly reactive the food then the more likely so it’s possible.

My son reacted to peanut butter in my breastmilk.... it was a chocking sensation in his throat as he stuck his fingers down his throat. He was also red round his neck and wrist. It was strange.. and only when he had peanuts and reacted did I link the two things.
He had terrible guts, lots of mucus production, eczema.. it took a lot of unpicking to work out what he was reacting to..

I eventually breastfed on no dairy, no gluten, no seeds, no nuts, no sugar... and he still had a small ring of eczema round his neck which disappeared when I stopped feeding him at 15 months.

@ChateauMargaux the things we do for our babies! I'm trying to decide what else (if anything) I should cut out of my diet.

That's how I would assume a peanut allergy would show (rash/ swelling/ redness/ choking) just wondered whether it could present as unsettled stomach, mucasy in poo etc.

It’s definitely possible, we’ve been advised to avoid nuts as my CMPA baby had a reaction we think was due to me eating cashews. I’d also be careful with soya (which is in everything!) as it’s similar to milk in terms of protein so a lot of babies who are allergic to milk are also allergic to soya. Then soya is legume similar to peanut so there can be a link between those two, so it could potentially be your missing link if there’s on going symptoms

There are two types of allergies. Immediate which cause the itching swelling and hives and delayed which cause gastric symptoms.
The delayed allergies can take 3 days from you eating a food to the symptoms showing so can be tricky to pin point.
Absolutely anything can be an allergen and the proteins cross into breastmilk. My daughter has 20 food allergies and reacted to me eating everything.
Have you given up soya too? Half of babies also react to soya. Egg is another common allergens and about 10% of babies that have cmpa also are allergic to beef.

Formulas come in two varieties extensively hydrolysed and amino acid. The extensively hydrolysed still contain dairy but are partially broken down so some babies can tolerate the milk proteins. Sensitive babies, and those that react to breastmilk are often in this category, will still react to the broken down proteins and need the completely dairy free amino acid formulas. The most common of the amino acid formulas are neocate and alfamino. There is also nutramigen puramino but this contains soya and as previously said a lot of babies can also have trouble with soya.