Patients with spinal<unk><unk>  paralysis often exhibit signs of lower motor neuron disease such as diminished muscle mass, fasciculations, and partial paralysis of the sternocleidomastoid and trapezius muscles. Interruption of the<unk>  supply to the sternocleidomastoid muscle results in an asymmetric neckline, while weakness of the trapezius muscle can produce a drooping shoulder, winged scapula, and a weakness of forward elevation of the shoulder.
Accessory nerve disorder
Lower motor neuron lesion
Upper motor neuron lesion
Calpainopathy
Median nerve palsy
Nerve injury
Neurolathyrism
Neurocristopathy