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A 51-year-old man with hypertension, type 2 diabetes mellitus, and hypercholesterolemiapresents with a 1-hour history of substernal chest discomfort anddyspnea. He was given sublingual nitroglycerin in the emergency department,but his symptoms did not resolve.

Chronic obstructive pulmonary disease(COPD) is the fourth leadingcause of chronic morbidity and mortalityin the United States.1 Its prevalenceand impact are increasing,and the World Bank/World HealthOrganization has projected that it willrank fifth in 2020 as a global burdenof disease.2,3 The economic and publichealth impact of COPD is staggering,because this chronic conditionrequires long-term care, frequentoffice visits, and use ofemergency department and hospitalservices. Thus, there is a pressingneed to discover new therapies thatcontrol symptoms and prevent diseaseprogression.

The parents of a 6-year-old child are concerned about blisterson her hands that erupted 3 days earlier and are spreading. The child isotherwise healthy and had attended a summer day camp. The parents areunaware of any trauma or exposure to allergens or toxic substances.

A major controversyin cardiologytoday iswhether loweringthe level oflow-density lipoprotein cholesterol(LDL-C) to substantiallybelow 100mg/dL-the current NationalCholesterol EducationProgram goal for patientswith existing coronaryheart disease1-willfurther reduce the incidenceof cardiovascularmorbidity and mortality.

An 88-year-old woman is admitted for severe dyspnea thathas worsened over the past month. Dyspnea on exertionis now elicited by everyday activities, even walking acrossthe room. Orthopnea and paroxysmal nocturnal dyspneahave progressed to the point that she has been unable tosleep at all the past several nights. She also tires very easilyand thinks her ankles are more swollen than previously.She denies chest pain or pressure.

For several months, a 16-year-old girl has had an asymptomatic papulosquamousdescending linear eruption on 1 leg.

A 34-year-old man has had Crohn disease for 12years. He presented initially with ileitis and has had 3surgeries for obstructive complications. Ileum resectionhas resulted in bile salt and fat malabsorption. Recently,the Crohn disease has spread to the large bowel. For thelast 2 years, he has also had seronegative spondyloarthropathy-another complication of Crohn disease.

An 84-year-old woman presents with a 3-year history of slowly progressivememory impairment accompanied by functional decline. Thepatient lives alone but has been receiving an increasing amount of support from her 2 daughters,who accompany her to the appointment. The daughters first noticed that their mother was havingtrouble driving. About a year ago, she started forgetting family recipes. She also left food cookingon the stove unattended and burned several pans. Currently, the daughters are providing mealsand transportation, assisting with housework, and doing their mother’s laundry. They have becomeincreasingly alarmed because she takes her medications only sporadically, despite the factthat they fill her pillboxes and call her regularly with reminders. Their chief concern is whether itis safe for their mother to continue to live alone.

For 3 months, a 57-year-old woman has had a persistent green nail that is occasionallyslightly sore; the nail plate has lifted. Another physician prescribed a7-day course of levofloxacin for a suspected Pseudomonas infection; the treatmenthad no effect on the nail. A subsequent 7-day course of norfloxacin wasalso unsuccessful. The patient is otherwise healthy.

A 17-year-old girl who is a competitive cross-country runner presentswith exercise-induced pain in the lower left leg that hasbeen present for 2 months. She describes the pain as a feelingof tightness that begins after 20 to 30 minutes of running; thistightness usually resolves within 15 to 30 minutes after shestops. During the past 3 weeks, the tightness has been accompaniedby a cramp-like pain. The patient runs before and afterschool about 12 miles each day. In addition to running, she hasalso begun playing flag football during the past 2 weeks. She isotherwise in good health.

A 41-year-old woman with a 4-yearhistory of polymyositis with lupus featureshas had constant rectal pain for4 months. She has not noticed any factorsthat either aggravate or relievethe pain. The patient complains of intermittentconstipation (but no dischargeor rectal bleeding), generalizedweakness and malaise for the past 2months, a low-grade fever for the pastmonth, and a 4.1-kg (9-lb) weight lossover the past 6 weeks. She denies nightsweats or chills, anorexia, vision problems,drug allergies, and tobacco oralcohol use.

A 22-year-old man presents to theemergency department with a2-week history of a worsening nonproductive,irritating dry cough andexertional dyspnea. The patient hasbeen otherwise healthy. He deniesfever, rigors, night sweats, hemoptysis,chest pain, palpitations, orthopnea,paroxysmal nocturnal dyspnea,ankle edema, and lymphadenopathy.

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Children sometimes have difficultyusing nasal sprays for allergies. Becauseof the anatomic configurationof the nasal passages and oropharynx,sprays are better directed whenthe head is tipped down, rather thanwhen held in the neutral or upwardposition.

A 76-year-old woman presents with chest pain-which she describes as“muscle tightness”- that began when she awoke in the morning. Thepain is constant, exacerbated by deep inspiration, and accompanied by asubjective sense of slight dyspnea; she rates its severity as 3 on a scale of1 to 10. She denies pain radiation, nausea, diaphoresis, palpitations, andlight-headedness. Her only cardiac risk factors are hypertension and a distanthistory of smoking.

To relieve an itch, have patients ruban ice cube over the affected areainstead of scratching with their fingernails.

Hold an otoscope with the light on in front of the patientand ask him or her to make believe it is a candle.

Reducing intraocularpressure (IOP)slows the progressionof glaucoma-or does it? Until recently,no evidence from arandomized controlled trialsupported the practice oftreating elevated IOP withdrug therapy or surgery.