Duchenne-Erb's palsy or simply<unk> , is a lesion to the C5-C6 brachial roots; it can be a form of brachial plexus birth palsy (BPBP) or can be acquired in adulthood. It occurs when there is a stretching of the superior brachial plexus (neuropraxia, neuroma, neurotmesis), leading in most of the cases to a temporal weakness and loss of sensation in certain muscles of the upper extremity.
Erb's palsy
Bell's palsy
Horner's syndrome
Donohue syndrome
Arcus senilis
Epiphora 
Todd's paresis
Haff disease