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Frequency. 1 in 1,000,000. Stiff-person syndrome ( SPS ), also known as stiff-man syndrome, [1] is a rare neurological disorder of unclear cause characterized by progressive muscular rigidity and stiffness. The stiffness primarily affects the truncal muscles and is characterised by spasms, resulting in postural deformities.
Functional neurologic disorder or functional neurological disorder ( FND) is a condition in which patients experience neurological symptoms such as weakness, movement disorders, sensory symptoms, and blackouts. As a functional disorder, there is by definition no known disease process affecting the structure of the body, yet the person ...
Posterior reversible encephalopathy syndrome ( PRES ), also known as reversible posterior leukoencephalopathy syndrome ( RPLS ), is a rare condition in which parts of the brain are affected by swelling, usually as a result of an underlying cause. Someone with PRES may experience headaches, changes in vision, and seizures, with some developing ...
Catalepsy is a nervous disorder characterized by immobility and muscular rigidity, along with a decreased sensitivity to pain. Catalepsy is considered a symptom of serious diseases of the nervous system (e.g., Parkinson's disease, Epilepsy, etc.) rather than a disease by itself. Cataleptic fits can range in duration from several minutes to weeks.
Functional disorder is an umbrella term for a group of recognisable medical conditions which are due to changes to the functioning of the systems of the body rather than due to a disease affecting the structure of the body. Functional disorders are common and complex phenomena that pose challenges to medical systems.
Genes. Frequency. 0.01%. Situs inversus (also called situs transversus or oppositus) is a congenital condition in which the major visceral organs are reversed or mirrored from their normal positions. The normal arrangement of internal organs is known as situs solitus. Although cardiac problems are more common, many people with situs inversus ...
Body integrity dysphoria (BID), also referred to as body integrity identity disorder (BIID), amputee identity disorder or xenomelia, and formerly called apotemnophilia, is a rare mental disorder characterized by a desire to have a sensory or physical disability or feeling discomfort with being able-bodied, beginning in early adolescence and resulting in harmful consequences.
Rheumatology. Diffuse idiopathic skeletal hyperostosis ( DISH) is a condition characterized by abnormal calcification/bone formation ( hyperostosis) of the soft tissues surrounding the joints of the spine, and also of the peripheral or appendicular skeleton. [1] In the spine, there is bone formation along the anterior longitudinal ligament and ...