<unk>  is an alternating brainstem<unk> . It occurs when there is damage to the dorsolateral or posterior lateral medulla oblongata, likely syphilitic in origin. Hence it is also called the alternating medulla oblongata<unk> . The medulla oblongata is the lower half of the brainstem. It controls autonomic functions and connects the higher levels of the brain to the spinal cord. It is responsible for regulating several basic functions of the autonomic nervous system, including respiration, cardiac function, vasodilation, and reflexes like vomiting, coughing, sneezing, and swallowing. The rare disorder is caused by damage to a part of the brain (medullobulbar transitional area) which causes a variety of neurological symptoms, some of which affect only one side of the body. Symptoms include ipsilateral (same side) cerebellar ataxia, sensory deficits of the face, and Horner's<unk> , along with weakness and loss of sensation on the contralateral (opposite side) of the body. It was first described in 1902 and later named after the neurologists who initially investigated it, Joseph<unk>  and Jean<unk> .
Babinski–Nageotte syndrome
Say–Meyer syndrome
Madras motor neuron disease
Hard flaccid syndrome
Klumpke paralysis
Dejerine–Roussy syndrome
Spinal and bulbar muscular atrophy
X-linked dystonia parkinsonism