Orthostatic Tremor
Primary Orthostatic Tremor or OT as it is usually called is a very rare degenerative neurological condition first diagnosed by Dr K. M. Heilman back in 1984 and his report detailed the state of a very small group of sufferers. It is thought that OT is so rare that only about a couple of hundred cases might exist in the UK.
According to the National Organization of Rare Disorders the following is a brief description of Primary Orthostatic Tremor.
Primary orthostatic tremor is a rare movement disorder characterized by a rapid tremor in the legs that occurs when standing. The tremor disappears partially or completely when an affected person is walking or sitting. Individuals with primary orthostatic tremor experience feelings of unsteadiness or imbalance. In many cases, the tremors become more severe over time. The exact cause of primary orthostatic tremor is unknown.
Now that description comes from only a handful of medical reports and very few subjects, in fact it is rare to see a report where more than twenty took part in the study. What this means is the very few reports on the internet have been copied over and over again and physicians believe that the description above outlines the condition, where as many specialist know that the description only describes the onset conditions and if the patient is unlucky then they progress to much worse symptoms.
What you have to remember with OT is that it is rare, most physicians have never heard of OT unless they have had a patient with the condition. Worse still only about a third of neurologist have heard of the condition and after reading the standard description they are often confused when faced with a sufferer who have progressed to more severe symptoms.