It is not easy to predict whether there is going to be difficulty delivering the baby's shoulders. If the mother is known to have a small pelvic outlet and to be carrying a large baby, the infant may be delivered by cesarean section.
The long-term effects of brachial palsy will vary, depending on the degree of damage to the brachial plexus. If mild damage occurs, the symptoms may improve within several days to 6 months. With severe damage, permanent paralysis may occur.
Brachial palsy poses no risk to others.