Infectious Disease

A 38-year-old man sought treatment for the intensely pruritic swellings that had arisen on his upper lip 2 weeks earlier (A). These sharply demarcated, tender, boggy, granulomatous, pustular tumefactions are kerions, write Florence Isaac, MD, of Mohammad Dossary Hospital in Saudi Arabia and Shaun Isaac, MD, of St Petersburg, Fla. The diagnosis is based on the history of acute onset, the clinical appearance of the lesions, and the demonstration of a fungus by a potassium hydroxide (KOH) preparation of loose hairs removed from the affected area and by fungal culture. In this case, the KOH preparation revealed fungal filaments, which on culture grew Microsporum canis. A pus swab test should be performed to detect any bacterial copathogen. The differential diagnosis of kerion includes impetigo and carbuncle.

A 19-day-old infant was brought to the emergency department (ED) after a day of fever, coughing, and difficulty in breathing. He had been born at full term via vaginal delivery. There was no history of prolonged rupture of membranes. The mother was group B streptococcus-positive and had been treated appropriately before the delivery. The infant received 48 hours of empiric antibiotic therapy after his birth; blood cultures were negative at the birth hospital. The infant had been doing well before the ED visit.

A 62-year-old previously healthy man is admitted for right upper quadrant pain; a workup reveals acute cholecystitis as the cause. During evaluation for surgery, his creatinine level is found to be 6.0 mg/dL; 1 year earlier it was 1.0 mg/dL. A trial of fluids does not lower the creatinine level. Renal ultrasonography shows no obstruction but reveals increased kidney size (left, 11.4 3 4.4 3 5.0 cm; right, 10.1 3 4.6 3 4.5 cm) with increased diffuse echogenicity.

A 6-year-old boy has a rash on his hands and feet that erupted shortly after he started first grade. His parents are concerned that he may be allergic to something at school, such as chalk. He is otherwise healthy.

This 18-year-old girl had been taking divalproex for seizure disorder for 2 years. Because she had gained weight while taking this medication, the patient asked for another drug. Her neurologist prescribed lamotrigine. Ten days after starting the new agent, a generalized, painful, pruritic, ery- thematous dermatitis; fever; and sore throat developed.

Staphylococcal pneumonia can be classified as either primary or secondary. In primary disease, the infection is caused by direct inoculation of the respiratory tract. Secondary disease occurs by hematogenous spread (eg, as in endocarditis).

A 62-year-old previously healthy man is admitted for right upper quadrant pain; a workup reveals acute cholecystitis as the cause. During evaluation for surgery, his creatinine level is found to be 6.0 mg/dL; 1 year earlier it was 1.0 mg/dL.

This 18 year old girl had been taking divalporex for seizure disorder for 2 years. After requesting a new drug because of weight gain, a generalized, painful, pruritic, erythematous dermatitis; fever; and sore throat developed after ten days.

A 4-year-old girl presents with a highly pruritic rash. The day before, she had been playing outdoors at her grandmother's house. No pets were present, and the patient does not recall being stung or bitten by insects. There are bushes on the grandmother's property.

When sewing lacerations in children, think ahead to the removal stage.

When sewing lacerations in children place sutures far enough from the wound edges that their eventual removal will be easy.

A Photo Quiz to Hone Dermatologic Skills

Two children, one with a history of infection, the other with a history of an allergic reaction were noted to have postinflammatory hyperpigmentation.

SAN DIEGO -- The pain of a prostate biopsy may not be fully numbed by local anesthesia, according to Mayo Clinic researchers who determined that the procedure may never be free of all discomfort.

SAN DIEGO -- The pain of a prostate biopsy may not be fully numbed by local anesthesia, according to Mayo Clinic researchers who determined that the procedure may never be free of all discomfort.

LONDON -- A pathway to early diagnosis of tuberculosis could be so-called proteomic fingerprinting of serum, a technique that employs mass spectroscopy to identify a pattern of proteins specific to the disease.

LONDON -- A pathway to early diagnosis of tuberculosis could be so-called proteomic fingerprinting of serum, a technique that employs mass spectroscopy to identify a pattern of proteins specific to the disease.

NEW HAVEN, Conn. -- The use of antibiotics has been substantially reduced for children with acute otitis media, with little effect on outcomes, by contingency prescriptions that recommend a delay in filling.

NEW HAVEN, Conn. -- The use of antibiotics has been substantially reduced for children with acute otitis media, with little effect on outcomes, by contingency prescriptions that recommend a delay in filling.

BOSTON -- The sharp drop in air travel after the 9/11 attacks in 2001 slowed the spread of the 2001-2002 seasonal flu and delayed its peak by almost two weeks, according to researchers here. The finding showed that air travel contributes to influenza's spread.

EAST HANOVER, N.J. -- Investigators looking to see whether an Alzheimer's drug could help the memory of patients after a traumatic brain injury had to mine the data hard for a faint light at the end of the tunnel.

EAST HANOVER, N.J. -- Investigators looking to see whether an Alzheimer's drug could help the memory of patients after a traumatic brain injury had to mine the data hard for a faint light at the end of the tunnel.

ATLANTA -- As the severe acute respiratory syndrome (SARS) epidemic moved round the world in 2002-03, clinicians tried a range of interventions against the coronavirus. Now it seems that they may have been futile, at best.

SPRINGFIELD, Ill. -- Americans' risk of dying from cancer continues to decrease, but the rate of new cancers for both sexes and for all races combined has not changed from 1992 to 2003, according to a report by the nation's leading cancer organizations.

SAN DIEGO -- Fatal encounters with stingrays like the one that killed "Crocodile Hunter" Steve Irwin this week are extremely rare, but minor injuries from the creatures are common.