Neupsy Key

INTRODUCTION Print Section Listen The clinician caring for patients with neurologic symptoms is faced with myriad imaging options, including computed tomography (CT), CT angiography (CTA), perfusion CT (pCT), magnetic resonance…

INTRODUCTION Print Section Listen The general principles around headache as a cardinal symptom are covered elsewhere (Chap. 9); here we discuss disorders in which headache and associated features occur in…

INTRODUCTION Print Section Listen A seizure (from the Latin sacire, “to take possession of”) is a paroxysmal event due to abnormal excessive or synchronous neuronal activity in the brain. Depending…

INTRODUCTION Print Section Listen The cerebral cortex of the human brain contains approximately 20 billion neurons spread over an area of 2.5 m2. The primary sensory and motor areas constitute…

INTRODUCTION Print Section Listen The importance of back and neck pain in our society is underscored by the following: (1) the cost of back pain in the United States exceeds…

INTRODUCTION Print Section Listen Disturbed sleep is among the most frequent health complaints that physicians encounter. More than one-half of adults in the United States experience at least intermittent sleep…

INTRODUCTION Print Section Listen Dementia, a syndrome with many causes, affects >5 million people in the United States and results in a total annual health care cost between $157 and…

INTRODUCTION Print Section Listen Normal somatic sensation reflects a continuous monitoring process, little of which reaches consciousness under ordinary conditions. By contrast, disordered sensation, particularly when experienced as painful, is…

INTRODUCTION Print Section Listen Syncope is a transient, self-limited loss of consciousness due to acute global impairment of cerebral blood flow. The onset is rapid, duration brief, and recovery spontaneous…