A brain abscess affects the brain’s parenchyma directly, whereas parameningeal infections produce suppuration in potential spaces covering the brain and spinal cord (epidural abscess and subdural empyema) or produce occlusion of the contiguous venous sinuses and cerebral veins (cerebral venous…
Epidemiology and Current Trends Acquired immunodeficiency syndrome (AIDS) was first recognized in the United States in the summer of 1981 when unexplained occurrences of Pneumocystis jirovecii (formerly carinii ) pneumonia and Kaposi sarcoma were reported in cohorts of previously healthy…
Definitions Consciousness may be defined as a state of awareness of self and surroundings. Alterations in consciousness are conceptualized into two types. The first type affects arousal and is the subject of this chapter. Sleep, the only normal form of…