Is it possible for a baby to be allergic to their mother's breast milk?

It is not possible for a baby to be allergic to the
mother's breast milk.  In fact, research has shown that breast milk protects against
allergies.  Babies are biologically designed to eat the mother's breast milk; however,
it is possible for a baby to be allergic to what is in the mother's breast
milk.

Quite often it is actually cow's milk protein that is
causing the baby to be sensitive to or have an allergic reaction during feeding.  Nuts
can also do the same thing, though it is quite rare.

The
majority of the time the baby may simply be fussy, and spitting up is normal.  Reflux is
also another common condition that could be confused as a breast milk
allergy.

But in the end, it is impossible to be allergic to
the breast milk itself.