Infectious Disease

The parents of this 2-year-old boy brought their son for evaluation of swelling of the right leg and excoriation and serosanguineous discharge from the ankle region of 3 days' duration.The child had had a hemangioma of the right ankle since birth. Subsequently, there was gradual spread of the lesion along the leg to the buttocks.

What is the best way to obtain skin scrapings and evaluate them for evidence of fungal infection?

A 65-year-old woman with well-controlled hypertension comes in for a routine checkup. During the past 10 years, she has gained 25 lb and lost 1.5 inches in height.

Excessive sweating may be caused by a variety of conditions or prescription drugs.

A slowly progressive rash; pruritic lesions in the antecubital fossae; circular scaling, erythematous plaques--can you identify the disorders pictured here?

Abstract: In most patients, a life-threatening exacerbation of asthma is preceded by a gradual worsening of symptoms. However, some patients have a sudden onset of worsening symptoms, and these patients are at increased risk for respiratory failure and death. Risk factors for near-fatal asthma include a history of a life-threatening exacerbation, hospitalization for asthma within the past year, delay in time to evaluation after the onset of symptoms, and a history of psychosocial problems. Regularly monitoring peak expiratory flow rate (PEFR) is particularly important because it can identify a subset of high-risk patients--specifically, those with large fluctuations in PEFR and those who have severe obstruction but minimal symptoms. Signs of life-threatening asthma include inability to lie supine, difficulty in speaking in full sentences, diaphoresis, sternocleidomastoid muscle retraction, tachycardia, and tachypnea. (J Respir Dis. 2005;26(5):201-207)

The prevalence of asthma in the United States is estimated to be 5% to 8%. Asthma is responsible for approximately 5000 deaths annually in this country. It is a leading cause of emergency department visits, hospitalizations, and school and work absenteeism. The total estimated direct cost of the disease in the United States was $12.7 billion in 1998.

A 70-year-old woman complained of an infection in the right index fingernail and surrounding skin of 18 months' duration. The modest swelling and tenderness of the proximal paronychial tissue, faint nail dystrophy, and separation of the cuticle from the nail plate had persisted despite several courses of oral and topical antibiotics. The patient had occasionally seen pus seeping from underneath the cuticle. Results of a bacterial culture, performed by another physician, were negative.

A 13-year-old boy presented with an explosive eruption of numerous, small, round, erythematous, itchy plaques on his lower back and lower limbs of 2 weeks' duration. Some of the lesions were scaly. His nails were normal. There was no evidence of arthritis or joint deformity. He had a sore throat a month before the onset of the rash but did not seek medical attention. He was not taking any medication and had no history of joint pain or family history of skin problems.

A 68-year-old man presents to the emergency department with diplopia and headache of acute onset accompanied by nausea and vomiting.

In Dr Henry Schneiderman's interesting case of swelling and redness of the lids in an elderly woman, the photograph clearly illustrates a sharp demarcation of the area of swelling above the cheekbone.

An 80-year-old man complains of lancinating pain in his right axilla and chest that began 2 days earlier and has kept him awake at night. He has had no fever, cough, sputum production, dyspnea, or symptoms suggestive of congestive heart failure.

Primary care physicians are usually the first to see patients with joint pain; consequently they represent the "front line" of RA care. This fact-coupled with the projection that the number of rheumatologists is expected to decline by 20% during the next 2 to 3 decades-underscores the pivotal role that primary care clinicians are now expected to play in the early diagnosis of RA.

Abstract: The use of sputum studies and blood cultures in patients hospitalized with community-acquired pneumonia (CAP) is somewhat controversial, and recommendations continue to evolve. A reasonable approach is to attempt to obtain sputum cultures from all patients before initiating antibiotic therapy. If antibiotics have already been given, sputum studies can be reserved for patients who are severely ill or who are at risk for infection with a resistant organism or an organism that is not covered by the usual empiric therapy. The Infectious Diseases Society of America and the American Thoracic Society both recommend obtaining blood cultures from all patients. However, cost considerations have led to alternative strategies, such as reserving blood cultures for those with severe CAP. (J Respir Dis. 2005;26(4):143-148)

In 2001, 11 US residents contracted inhalation anthrax as a result of the deliberate mailing of 4 letters containing anthrax spores. Five died as a result. Several of these patients presented to physicians before becoming fatally ill, but their illness was misdiagnosed as influenza.1

A 67-year-old woman underwent right pneumonectomy for non-small-cell carcinoma of the right lung. Her postoperative course was uneventful, and she was discharged from the hospital on the fifth day.

Abstract: For some patients with allergic rhinitis, symptoms can be reduced substantially by the use of allergen avoidance measures. However, many patients require pharmacotherapy, including antihistamines, decongestants, and intranasal corticosteroids, to adequately control their symptoms. The oral antihistamines are effective in reducing rhinorrhea, itching, and sneezing but are not effective against nasal congestion. Intranasal azelastine has been shown to be beneficial in patients with moderate to severe symptoms that are not sufficiently controlled by an oral antihistamine. Additional therapies include intranasal ipratropium, which specifically targets rhinorrhea, and cromolyn, which can reduce many of the symptoms of allergic rhinitis and can be used prophylactically. (J Respir Dis. 2005;26(4):150-162)

A 38-year-old man presented to the emergency department (ED) with a 2-week history of worsening shortness of breath and dry cough. He also complained of anorexia, a 14-kg (30-lb) weight loss over 3 months, pleuritic chest pain, and night sweats.

Yellow, thickened nail plates; complete or partial loss of fingernails; asymptomatic greenish black discoloration--what do you suspect is the underlying cause in these cases?

A 13-year-old boy has had mild right knee pain for about 1 week; the pain was exacerbated by a collision and subsequent fall during soccer practice. He recently began playing soccer on a team that practices every weekday and has games on the weekends. He has played since his collision, but the knee pain has progressively worsened.

Two ringed, extremely pruritic lesions were noted on a 6-year-old girl receiving immunosuppressive therapy after she had undergone heart transplantation. The mother reported that the lesion on the chin had appeared 7 to 10 days earlier and had gradually increased to the present size; she did not know when the lesion on the upper chest had appeared. The child had no other lesions. Her cousin had had similar findings about 2 to 3 weeks earlier.

A 45-year-old Asian man presents with a 3-week history of weight loss, poor appetite, fatigue, intermittent sweats, and a nonproductive cough. The patient, a recent immigrant, denies previous illness.

Now that the role of inflammation in the pathogenesis of cardiovascular disease has been recognized, biomarkers of inflammation have become the subject of intense research interest. Once considered a novel cardiovascular risk factor, the inflammatory biomarker C-reactive protein (CRP) is currently believed to improve global risk prediction in patients not previously deemed at high risk.

A 69-year-old woman was hospitalized with fever, chills, and nausea. Three weeks earlier, she had received a 2-week course of oral levofloxacin for pneumonia, which resolved. Her history included rheumatic heart disease; diabetes mellitus; depression; a hysterectomy; 2 mitral commissurotomies; nonrepairable mitral valve regurgitation, for which she received a St Jude Medical bileaflet valve; a left-sided cerebrovascular accident; and paroxysmal atrial fibrillation. Her medications included verapamil, furosemide, metoprolol, potassium chloride, metformin, nortriptyline, and warfarin. She denied tobacco and alcohol use.

Instead of recommending that patients use gauze to protect their underwear after rectal surgery, tell them to try self-adhering feminine hygiene mini pads.

When a patient presents with unilateral abdominal pain, always consider shingles--especially if the patient is elderly.

A 39-year-old woman has a tender vesicular rash on her finger. A similar rash that had appeared on the same finger 1 year earlier responded slowly to a course of oral cephalexin

ABSTRACT: Although the widespread use of prostate-specific antigen (PSA) testing has led to an increase in the number of cancers detected, controversies about the benefits of screening persist. No conclusive evidence has yet emerged that PSA screening reduces the mortality associated with prostate cancer. Thus, mass screening is not universally endorsed. The American Urologic Association and the American Cancer Society recommend that digital rectal examination and PSA testing be offered annually to men 50 years and older with an estimated life expec- tancy of 10 years or more. High-risk patients (those with a positive family history or those of African American descent) are advised to begin screening at age 45. The decision to screen is based on the patient's preference following a thorough discussion of the benefits and limitations of PSA testing. Refer to a urologist any patient with a PSA greater than 4.0 ng/mL. Also, be alert for high PSA velocity changes in patients undergoing annual screening, and refer those with a PSA velocity of more than 0.75 ng/mL/y.

Painful cysts on the sternal and left axillary regions that had worsened over the past 3 weeks prompted a 42-year-old man to seek medical care. He reported that similar lesions in the same distribution first arose when he was 25 years old, and they recur each year. He denied having cystic acne in adolescence.

For a year, a 31-year-old man had asymptomatic, malodorous discoloration of the toe web spaces. He stated that his feet perspire heavily in the boots he is required to wear for work.