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Within the past 7 years, the incidence of methicillin-resistant Staphylococcus aureus (MRSA) and Clostridium difficile infections has significantly increased. Risk factors for MRSA infection include previous antibiotic therapy and living arrangements such as prisons or military barracks that involve close, frequent contact with infected persons. Treat stable patients with MRSA skin infections with oral antibiotics in addition to incision and drainage; hospitalization and intravenous antibiotics are recommended for patients whose condition is unstable or who are unlikely to adhere to an oral regimen. A new strain of C difficile, BI/NAP1, has been associated with recurrent infection; more severe disease that mandates urgent colectomy; and dramatically higher mortality in vulnerable populations, such as older adults. Although oral metronidazole has been the mainstay of treatment of C difficile infection, oral vancomycin may be slightly more effective in patients with severe disease.

An 89-year-old man reported that this lesion began developing on his left forearm 11 days earlier. It is a keratoacanthoma, a rapidly growing but benign neoplasm that occurs predominantly on the extensor surfaces of the hands and forearms of white men over age 50.

Although many lacerations are treated in the emergency department, primary care clinicians still see their share of such wounds. Most lacerations are incurred on the face and head (as a result of falls or altercations) or on the hand or lower arm (caused by tools, broken glass, or other sharp objects).

SALT LAKE CITY -- Forecasts that physician-assisted suicide and euthanasia would be practiced disproportionately on vulnerable groups, such as the poor, the elderly, and women, did not prove accurate, according to researchers here.

BILBAO, Spain -- For calcific tendinitis of the shoulder, ultrasound-guided percutaneous needle aspiration and lavage can improve range of motion and provide both short- and long-term relief of pain, reported investigators here.

MADISON, Wis. -- Symptoms of autism, including maladaptive behaviors and impaired social interactions, appear to lessen over time in a significant percentage of patients studied over nearly five years.

ELIZABETH, N.J. -- Nearly two dozen illnesses from frozen hamburgers apparently tainted with Escherichia coli O157:H7 have prompted a meat company to recall more than 300,000 pounds of beef.

BOSTON -- When a patient dies during a "code call" in the hospital, the residents, nurses, and technicians who responded to the emergency might stop for just a moment and pay respects to the life that was lost, suggested a Harvard internist.