Infectious Disease

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A 69-year-old man with stage II chronic kidney disease due to hypertension fell from his bicycle and presented to the emergency department (ED) with abrasions, ecchymoses, and a 3-cm laceration on his right leg. The patient was an avid cyclist. His wounds were cleaned and the laceration sutured. There were no fractures, and the patient was discharged home.

A 48-year-old woman sought medical attention after an episode of gross hematuria associated with mild right-sided loin discomfort. She did not have urinary frequency, urgency, or dysuria. Her history included 3 urinary tract infections; a Proteus species was cultured on each occasion. The family history was unremarkable. Other than mild loin tenderness, physical findings were normal.

This year's influenza season is approaching fast. Although the World Health Organization officially declared an end to the 2009 H1N1 influenza pandemic in August, the H1N1 virus is still circulating and is likely to continue to cause serious disease in infants, young children, pregnant women, and other high-risk groups.

Many patients with a viral upper respiratory tract infection still expect an antibiotic prescription when they come to the office.

This year’s influenza season is approaching fast. Although the World Health Organization officially declared an end to the 2009 H1N1 influenza pandemic in August, the H1N1 virus is still circulating and is likely to continue to cause serious disease in infants, young children, pregnant women, and other high-risk groups.

A51-year-old man who was an active injection drug user was admitted to the ICU with septic shock and severe respiratory distress. Notable findings were fever, multiple opacities on a chest radiograph, and an elevated white blood cell count.

This 40-year-old man presented with fever and a generalized, painful, nonpruritic rash of 2 days’ duration. The rash first appeared on his face then spread to his hands, buttocks, and lower extremities. Two weeks earlier, he had an episode of severe rhinitis followed by high fevers, chills, muscle aches, and ankle pain.

A previously healthy 19-year-old woman presents with a sore throat that has become progressively more painful over the course of 1 week. She also has left-sided neck swelling, light-headedness, and intermittent headaches. She denies recent sexual activity.

A linear, severely pruritic rash erupted on the lateral and plantar aspects of the left foot of a 72-year-old woman who had recently been camping on a Caribbean beach. Antihistamines and locally applied antifungal agents offered no relief.

An 18-year-old woman from Mexico was hospitalized because of severe headache with nausea and vomiting. Her headaches had started 4 years earlier and had progressively worsened. They occurred mainly in the occipital region and were pulsating, worse on bending down, and unrelieved by any medication. They were often accompanied by dizziness and presyncope.

During a routine checkup, a 14-year-old girl inquires about a large red spot on her right ankle. The asymptomatic, erythematous area overlying the malleolus has been present for several months.

In adults who present with persistent cough following an upper respiratory tract infection but who have no history of asthma or chronic obstructive pulmonary disease, lung findings are usually “normal” on auscultation.

A universal vaccine that protects against all strains of influenza virus may eventually replace yearly seasonal flu shots. This vaccine has been shown to be effective in animals, report investigators from the National Institute of Allergy and Infectious Diseases (NIAID).

For about 2 weeks, a 61-year-old woman with diet-controlled diabetes and hypertension had fatigue and generalized weakness. For the past 3 months, she had had poorly localized back pain and bilateral flank pain. She denied dysuria, fever, decreased urinary output, or weight loss.