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What is Klumpke paralysis and explain in detail?
Klumpkes paralysis 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. The paralytic condition is named after Augusta Déjerine-Klumpke.

Signs and symptoms
Symptoms include intrinsic minus hand deformity, paralysis of intrinsic hand muscles, and C8/T1 Dermatome distribution numbness. Involvement of T1 may result in Horners syndrome, with ptosis, and miosis. Weakness or lack of ability to use specific muscles of the shoulder or arm. It can be contrasted to Erb-Duchennes palsy, which affects C5 and C6.

Cause
Klumpkes paralysis is a form of paralysis involving the muscles of the forearm and hand, resulting from a brachial plexus injury in which the eighth cervical (C8) and first thoracic (T1) nerves are injured either before or after they have joined to form the lower trunk. The subsequent paralysis affects, principally, the intrinsic muscles of the hand (notably the interossei, thenar and hypothenar muscles) and the flexors of the wrist and fingers (notably flexor carpi ulnaris and ulnar half of the flexor digitorum profundus). The classic presentation of Klumpkes palsy is the “claw hand” where the forearm is supinated, the wrist extended and the fingers flexed