i really would try cutting out milk and milk products - use soya milk for cereal and drinking, make sure its with added calcium and minerals/vitamins. I was advised to avoid the 'posh' milk substitutes as they have less calories and protein in them, which make them more unsuitable.
They put milk powder in the strangest of things: sausages, fishfingers, crisps, gravy, etc etc etc.
Good rule of thumb is to avoid anything with a flavoured coating on because they use milk powder as a flavour carrier - products like crisps, meatsauces, potato wedges, anything with flavour added on the outside.
Cereals also have hidden milk: some (but not all) chocolate cereals (check the label), special K, country store, alpen, etc.
They also use it as a 'filler', so some meat products like sausages, meatballs, burgers, instant mash potato. etc.
Products in a batter or bread: fish, nuggets, etc
Not forgetting of course products which are made with milk - yoghurts, cheese (cream & cottage), fromage frais, custard, ice cream, mousse, butter, creamed rice, angel delight (contains powdered milk), instant whip, tinned macaroni cheese, mayonnaise, salad cream, horlicks, ovaltine, creamed soups, and tinned soups, cakes and biscuits etc
Most dried pasta is OK, but not the fresh.
Most bread is OK, just usually the 'posh' and the store baked bread (and of course milk breads), check labels - if no label DONT BUY.
Margerines still have buttermilk in them usually, so buy one that specifically states 'dairy free', vitalite do one, as does 'pure' TBH i cant tell the taste difference so its easy enough for everyone to use it.
Milk is labelled as an allergen on all english labels (not european unfortunately), so you will have to label check EVERYTHING.
So what are you looking for on labels?:
AVOID: butter, buttermilk, butterfat, butter oil, casein, caseinates, hydrolysed casein, cheese, cream, curd, lactoglobulin, lactose, margerine, milk, milk powder, milk solids (so sorry no choccy !), non-formula solids, skimmed milk, skimmed milk powder, whey, whey syrup, whey syrup sweetener, yoghurt.
ALL TRACES OF MILK HAVE TO BE ELIMANATED, it wont work if you just cut it down.
It sounds awful, but its really not, it just takes remembering, and altering slightly. There are biscuits which are milk free (and dont cost a fortune), and there are alternatives to milk products: alpro milk and yoghurts, provamel creams and puddings, and soya ice-creams like swiss/swedish glace. Jams, jellies, honey, boiled sweets, ice lollies, pastilles, gums are also fine, fresh meat and fish too. Tinned fish in oil or brine (no sauce!) All fruit and veg (again no sauce). Plain crisps and plain pringles, are fine too.
Try also to avoid MSG, monosodium glutamate, its a flavour enhancer - and its in MOST processed savoury food, basically it makes your tastebuds go in to overdrive and think they can taste foods strongly, so the manufacturers dont have to waste time and money putting actual taste into food
sorry to waffle, but hope that helps. I suspect it might be a milk problem because of the excema (SP??) and the stools problem. they are classic symptoms. HTH XXX