Although still considered a disorder of infancy and cognitive disability at that time, the difference in presentation between infants and adults was well established.Studies of rumination in otherwise healthy adults became decreasingly rare starting in the 1900s, and the majority of published reports analyzing the syndrome in mentally healthy patients appeared thereafter. At first, adult rumination was described and treated as a benign condition. It is now described as otherwise. While the base of patients to examine has gradually increased as more and more people come forward with their symptoms, awareness of the condition by the medical community and the general public is still limited. In other animals
The chewing of cud by animals such as cows, goats, and giraffes is considered normal behavior. These animals are known as ruminants. Such behavior, though termed rumination, is not related to human rumination syndrome, but is ordinary. Involuntary rumination, similar to what is seen in humans, has been described in gorillas and other primates. Macropods such as kangaroos also regurgitate, re-masticate, and re-swallow food, but these behaviors are not essential to their normal digestive process, are not observed as predictably as the ruminants, and hence were termed "merycism" in contrast with "true rumination". See also
Professional regurgitator

References
External links

Pediatrics - Rumination Syndrome - The Mayo Clinic. Website provides an overview of the effect of the disorder on children. Rumination disorder - Web MD. Provides a general overview of the disease.
Anterior spinal artery syndrome (also known as "anterior spinal cord syndrome") is syndrome caused by ischemia of the anterior spinal artery, resulting in loss of function of the anterior two-thirds of the spinal cord. The region affected includes the descending  corticospinal tract, ascending spinothalamic tract, and autonomic fibers. It is characterized by a corresponding loss of motor function, loss of pain and temperature sensation, and hypotension. Anterior spinal artery syndrome is the most common form of spinal cord infarction. The anterior spinal cord is at increased risk for infarction because it is supplied by the single anterior spinal artery and has little collateral circulation, unlike the posterior spinal cord which is supplied by two posterior spinal arteries. Signs and symptoms
Complete motor paralysis below the level of the lesion due to interruption of the corticospinal tract
Loss of pain and temperature sensation at and below the level of the lesion due to interruption of the spinothalamic tract
Retained proprioception and vibratory sensation due to intact dorsal columns
Autonomic dysfunction may be present and can manifest as hypotension (either orthostatic or frank hypotension), sexual dysfunction, and/or bowel and bladder dysfunction
Areflexia, flaccid internal and external anal sphincter, urinary retention and intestinal obstruction may also be present in individuals with anterior cord syndrome.Symptoms usually occur very quickly and are often experienced within one hour of the initial damage. MRI can detect the magnitude and location of the damage 10–15 hours after the initiation of symptoms.