What is the treatment, and will physical therapy be needed for my baby's arm paralysis?

Initial treatment includes protecting the involved limb by pinning the sleeve to the shirt or wrapping it to the body for the first several weeks. As soon as your child can tolerate it, gentle range of motion exercises should be started. These can typically be performed at home by the parents. Many infants will recover spontaneously on their own in the first six to eight weeks of life, and many will progress to a normal result. Those infants who do not initiate recovery until after three months of age may require future surgery to optimize the function of the arm.