This chapter focuses on apraxia of the upper limbs. Hugo Liepmann described three major forms of apraxia: ideomotor apraxia, which was also called ideo-kinetic apraxia in Liepmann's terminology; ideational apraxia; and limb-kinetic apraxia, also referred to by some investigators as melokinetic or innervatory apraxia. The chapter discusses the signs and pathophysiology of the apraxic disorders but use a processing approach. The Florida Action Recall Test (FLART), developed to assess conceptual apraxia, consists of 45 line drawings of objects or scenes for which an action with a tool is required. Conceptual apraxia is reported among persons with degenerative dementias such as Alzheimer's disease (AD) and in the semantic dementia subtype of frontotemporal lobar degeneration. Limb-kinetic apraxia is characterized by a loss of dexterity or deftness such that patients with this disorder are impaired at making precise, independent but coordinated finger movements.