Impotence in a stallion with neuritis cauda equina: A case report

Disorders of the Peripheral Nervous System

“…Impotence has been reported in stallions due to urospermia and erection failure. 23 DIAGNOSIS Currently, no specific antemortem diagnostic test exists for the diagnosis of PNE. The diagnosis is primarily one of exclusion, supported by the presence of clinical signs of cauda equina syndrome and cranial nerve deficits.…”

Neurological aspects of urospermia in the horse

“…A thorough neurological examination (Lunn and Mayhew 1989) must be undertaken to establish that no other localising factor is overlooked. In the case under consideration, neurological abnormalities related to brain and cranial nerve function may not have been expected but polyneuritis equi, affecting cranial nerves as well as innervation to the bladder and urethra, should have been a differential diagnosis (Held, Vanhooser, Prater and Blackford 1989). Although apparently not reported in the horse, selective brain stem disorders may alter the complicated reflexes associated with ejaculation and urination.…”