Klumpke paralysis

Klumpke's paralysis (or Klumpke's palsy or Dejerine-Klumpke palsy) is a variety of partial palsy of the lower roots of the brachial plexus. The brachial plexus is a network of spinal nerves that originates in the back of the neck, extends through the axilla (armpit), and gives rise to nerves to the upper limb. (see picture - click to enlarge). It is named after Augusta Déjerine-Klumpke.