<< Perhaps, with a baby who has been screaming since Day One, there is some
sort
 of injury (shoulderblade?) from the birth process that has not been
diagnosed.
 A baby who is in pain does more than just cry, it screams, and mothers for
the
 most part are completely aware of the difference whether they have had one
 child or six children. >>

While this is certainly a possibility, as well as the suggestions made by
Marie, it is also worthwhile to look into Sensory Defensiveness.  Children
with SD *cannot* tolerate certain sensations (different for each baby), so
that specific forms of touch, or the noise of the vacuum cleaner, or the feel
of the breast in the mouth is very aversive to them and they either withdraw
or cry.  These babies are often described as "difficult", "demanding",
"colicky" and so forth.  A good Occupational Therapist who understands
breastfeeding can be an excellent referral.

Nancy