When was HSP identified?

In the late 1800’s, A. Strümpell, a neurologist in Heidelberg Germany, described this disorder. He observed two brothers and their father, who had gait disorders and spasticity in their legs. After the death of the brothers, Strümpell was able to show through autopsy the degeneration of the nerve fibers leading through the spinal cord. The disorder was originally named after Strümpell, and after two Frenchmen who later provided more information about the disorder, Lorrain and Charcot.