tertiary syphilis: the third stage; characterized by involvement of internal organs especially the brain and spinal cord as well as the heart and liver
syphilis: a common venereal disease caused by the treponema pallidum spirochete; symptoms change through progressive stages; can be congenital (transmitted through the placenta)
ulnar nerve: a nerve running along the inner side of the arm and passing near the elbow; supplies intrinsic muscles of the hand and the skin of the medial side of the hand