Neurology

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A 49-year-old man presents with recurring facial pain of 6 months' duration. The pain initially occurred several times per week; it now occurs as often as several times per day. The paroxysmal pain is intense and incapacitating but abates within several minutes. It occurs in the right maxillary region and lower jaw and is sharp and lancinating. Hard chewing and teeth cleaning are the usual precipitating events. Between episodes, the patient is asymptomatic, without numbness or deficit in the affected region.

Drug-Induced Formication

The false sensation of bugs crawling on or within the skin is a sensory hallucination commonly associated with psychostimulant drugs. It was first reported in chronic cocaine users in 1889. Patients with this disorder often have self-induced dermatosis caused by intense picking and scratching of the skin.

A 28-year-old man is hospitalized because of highfever with rigors and chills and rapid weight loss(5.4 kg [12 lb] in 2 weeks). During the past 48 hours,generalized throbbing headache, intermittent vomiting,blurry vision, and seizures have developed. The progressiveseizures started in the left hand and have becomegeneralized grand mal.

A 25-year-old woman presents with fever, rash, mild headache, and decreased appetite. Six days after being prescribed TMP/SMX for urinary tract symptoms, fever developed and her temperature has been gradually rising since then.

Which test--antistreptolysin O titers, coronary angiography, enzyme-linked immunosorbent assay (ELISA), Western blot testing for Borrelia burgdorferi, or genetic testing for long QT syndrome--would help you diagnose a young man with worsening chest pain, frontal headache, and diffuse muscle and joint pain?

A 79-year-old woman with a 37-year history of type 2 diabetes mellitus complains of head pain that began more thana month ago and is localized to the left frontotemporal region. She characterizes the pain as constant and burning, with minimalfluctuations in intensity. The pain does not increase with any particular activity but is quite disabling; it has causedemotional lability and insomnia. She denies nausea, visual disturbances, weakness of the extremities, dizziness, or tinnitus.Her appetite is depressed; she has experienced some weight loss.

Delirium in older adults needs to berecognized early and managed as amedical emergency. Prompt detectionand treatment improve both shortandlong-term outcomes.1,2 Becausedelirium represents one of the nonspecificpresentations of illness in elderlypatients, the disorder can be easilyoverlooked or misdiagnosed. Misdiagnosismay occur in up to 80% of cases,but it is less likely with an interdisciplinaryapproach that includes inputfrom physicians, nurses, and familymembers.3

A 28-year-old man presented with chest pain, hemoptysis, and wheezing. He had a history of intermittent shortness of breath that occurred at least 3 times a year in the past 3 years; fever; and loss of appetite associated with headache, vomiting, and weakness. His medical history also included asthma, chronic gastritis, and more than 5 episodes of pneumonia since 1996. A test for hepatitis C virus (HCV) had yielded positive results.

The patient presented with left-sided, throbbing headaches that had gradually increased in severity and frequency. These headaches, which occurred once or twice a month, were associated with photophobia, phonophobia, and nausea, and usually lasted 8 to 12 hours. The headaches affected the patient's job performance and attendance, and she complained of fatigue, lack of sleep, and difficulty in concentrating.

A 36-year-old man with a 15-year history of episodic migraine presents to the emergency department (ED) at 5 AM witha right-sided throbbing headache of 4 hours' duration. The headache awakened him, which is typical of his more severemigraine attacks. Unfortunately, the patient forgot to refill his prescription for pain medication and did not "catch" thisheadache in time. He took an over-the-counter combination of aspirin and caffeine, which seemed to help for about 60minutes, but the headache has returned full force. He has vomited twice-another characteristic typical of his migraineattacks

This is a difficult question, because most "sinus headaches" are migraines.1-3 In fact, there is no such thing as a sinus headache. The International Headache Society (IHS) defines a headache attributable to rhinosinusitis according to the criteria listed in Table 1.4 This requires a diagnosis of acute rhinosinusitis and a headache that occurs at the same time.

Chronic headache that worsened when she bent forward and episodes of usually unilateral vision loss sent a 34-year-old woman for medical consultation. The vision loss occasionally occurred in both eyes simultaneously.

As many as 300,000 sportsrelatedconcussions arediagnosed each year inthe United States.1 Thisfigure underestimatesthe true incidence, however, becausemany concussive injuries are notrecognized by the injured persons,trainers, or physicians. A recentstudy found that 4 of 5 professionalfootball players with concussionwere unaware that they had sufferedthis injury.2

A 71-year-old man presented with a 6-week history of decreased vision in his right eye. The patient, who had hypertension and migraine headaches, had successfully recovered from a stroke that occurred 1 year earlier. His medications included aspirin, 81 mg/d, clopidogrel, atenolol, and furosemide. He also took gabapentin, 300 mg hs, for his migraine headaches. He had a remote history of cigarette smoking.

A 51-year-old man with a history of AIDS (CD4 count of 59 cells/µL), anemia, neutropenia, and AIDS-related dementia presented with persistent fever, abdominal pain, and diarrhea of 2 months' duration. He did not adhere to his regimen of HAART and prophylactic therapy with atovaquone and azithromycin.

A 45-year-old man presented to the emergency department (ED) with fever and left-sided pleuritic chest pain. He had been in good health until 4 days earlier, when diffuse myalgias, weakness, and frontal headache developed. Two days later, these symptoms were accompanied by onset of fever (temperature, 39.4°C [103°F]) and left-sided pleuritic chest pain. He denied chills, rigors, shortness of breath, hemoptysis, and cough.