Neurology

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Wernicke Encephalopathy

A 51-year-old man was hospitalized for subacute alteration of mental status. The patient had a history of alcohol abuse. He had no other medical disorders. Vital signs were normal. The patient scored 15 out of 30 on the Mini-Mental State Examination. He had an ataxic gait; all other physical findings were normal. The family reported that he had been treated in the emergency department 3 days earlier for hypoglycemia. Results of a complete metabolic profile and complete blood cell count were normal.

A 22-year-old man seeks medical attention at his college’s infirmary. He had been in excellent health until 1 week earlier, when he noted onset of fever, headache, and malaise.

A 47-year-old Hispanic woman with severe headaches of 1 month’s duration presents to the emergency department (ED). The pain encompasses the entire head, is constant and crushing (10 on a scale of 1 to 10), and has progressively worsened.

Two weeks before admission, he had visited the emergency department (ED) because of the headache. Migraine was diagnosed and ibuprofen had been prescribed. The headache persisted despite NSAID therapy, and the patient returned to the ED 2 days later.

Six days ago, a 36-year-old man had noticed a dark spot in the field of vision of his left eye. Now the spot more closely resembled a line. He denied other changes in his vision and had not seen any floaters or flashing lights.

A 28-year-old woman presents with milky discharge in both breasts and throbbing occipital headaches of 4 months' duration. The headaches begin gradually, do not radiate, and have no apparent triggers or relieving factors.

I have read both that the male brain has no estrogen receptors and that testosterone is converted to estrogen in the brain. Where does the truth lie? And what role, if any, does estrogen play in preventing Alzheimer disease in both men and women?

Depression was diagnosed 6 years earlier in a 37-year-old woman; it has been successfully managed since then with fluoxetine and outpatient psychotherapy. Since her teenage years, the patient has also experienced sporadic (fewer than 3 or 4 per year) mild or occasionally severe headaches, which she has usually self-treated with over-thecounter (OTC) agents or "just slept off."

A 50-year-old man with end-stage renal disease secondary to long-standing hypertension had an elevated hematocrit and progressively increasing hemoglobin levels. For the past 7 years, he had been receiving hemodialysis 3 times a week. He denied headache, flushing, easy bruising, bleeding, nausea, vomiting, chest pain, dyspnea, and other symptoms. He was not receiving exogenous erythropoietin.

In his "What's Your Diagnosis?" case of an 89-year-old woman with advanced Alzheimer disease who had injuries attributed to a fall in a nursing home (CONSULTANT, October 2006, page 1373), Dr Henry Schneiderman notes that "the fall was not observed" and that "many prior falls have been ascribed to her lack of safety awareness in negotiating the environment."

For 3 months, a 66-year-old retired man has had increasingweakness of the lower legs with stiffness,tingling, and numbness; worsening ataxia; anergia; andexertional dyspnea of insidious onset. He has lost 8 lb,and his appetite is poor. He denies fever, cough, chest orabdominal pain, paroxysmal nocturnal dyspnea, orthopnea,ankle swelling, bleeding disorders, hematemesis,melena, headache, vision problems, sciatica, joint pain,bladder or bowel dysfunction, and GI symptoms. He hasnocturia attributable to benign prostatic hypertrophy.

A 78-year-old widower with hypertension, type 2 diabetes, and hyperlipidemiais referred for a comprehensive geriatric assessment.His daughter is concerned about her father’s decline following her mother’s death a year ago.His memory seems to be deteriorating. His desk is cluttered with bills, but he refuses to lethis daughter help him or even look at his checkbook.

For the past week, a 16-year-old boy has had a progressively worsening dry, irritating cough; dyspnea on exertion; and intermittent fever and chills. During the past 24 hours, he has had no appetite and has vomited greenish material 3 or 4 times.