In secondary movement disorders, the abnormal movement is a manifestation of another systemic or neurological disorder. Step I : Decide the dominant type of movement disorder  Step II : Make differential diagnosis of the particular disorder  Step II: Confirm the diagnosis by lab tests  Treatment depends upon the underlying disorder. Movement disorders have been known to be associated with a variety of autoimmune diseases. Vesalius and Piccolomini in 16th century distinguished subcortical nuclei from cortex and white matter. However Willis' conceptualized the corpus striatum as the seat of motor power in the late 17th century. In mid-19th-century movement disorders were localized to striatum by Choreaby Broadbent and Jackson, and athetosis by Hammond. By the late 19th century, many movement disorders were described but for most no pathologic correlate was known. Hoofdwacht, Haarlem  The ("Head Watch", or "Civic guard headquarters") is a historically important . It was built in the 13th century and it is considered the oldest building in Haarlem, Netherlands. It has served as a printshop for Coornhert, as a temporary council meeting location across from City Hall and even as a jail. It is located on the across from the St. Bavochurch. From 1250 to around 1350 the building served as the first city hall of Haarlem. After the current city hall was built across the square, various important families lived in the house. The lower part of the building was used as a printing shop, a general store and for storing beer. Though it had lost its official function, as a large and imposing building in medieval Haarlem, it continued to be used for council meetings whenever the Count of Holland was visiting. A plaque above the door states:  This text in old Dutch says that whenever the Count "planted his court here on the sand" (meaning when he stayed in the large "Gravenzaal" or Count's hall across the square), this honorable building was put to use as the courthouse. The humanist Dirck Volckertszoon Coornhert once ran a printshop from the basement in the 16th century. The baroque facade is newer and dates from circa 1650. On May 17, 1755 the building was bought by the municipality to serve as headquarters for the civic guard ("). This is the reason for the building's current name. Each evening and morning the gates of the city would be unlocked by the militia who lived here.