
This lesion, present for 4 months, had not responded to oral nystatin or fluconazole. Multiple, nontender, whitish, vertical striations were noted along its right lateral edge. Your dx?

This lesion, present for 4 months, had not responded to oral nystatin or fluconazole. Multiple, nontender, whitish, vertical striations were noted along its right lateral edge. Your dx?

Patients frequently present with hand disorders, and the hands often show changes that reflect a disease that affects other parts of or the whole body. This week’s photo quiz offers several presentations to test your knowledge.

An otherwise healthy 24-year-old man is concerned about this mildly pruritic, scaly rash on his chest, which erupted during the late spring. What do you suspect is the diagnosis?

As the incidence of malignant melanoma continues to rise, so does primary care physicians’ need to identify pigmented lesions for early detection. Take a look at these presentations to test your knowledge.

A 42-year-old woman, who has a family history of non-melanoma skin cancer, is worried about these 2 small yellowish papules on her forehead. Can you identify these lesions?

Five days after starting a new medication, this lesion appeared on a man’s neck. It slowly resolved after the drug was stopped. Which of these drugs do you suspect might have caused the lesion?

For at least 3 months, this asymptomatic nodule has been slowly growing on a 63-year-old man's finger. What are you looking at here?

The patient's medical history was notable for hypertension, diabetes mellitus, and seizure disorder. Here, find images and lab results; then select a diagnosis.

The patient was treated with a combination of topical corticosteroids, oral retinoids, and psoralen with ultraviolet A (PUVA) therapy, with significant improvement in his symptoms over time.

A 76-year-old woman seeks your attention for an asymptomatic “red spot” on her neck. What does this look like to you?

Many medical disorders occur more frequently in the cold, dry weather of the winter season. Take this week’s photo quiz to test your knowledge of these hazardous conditions.

This teen has had violaceous papules, petechiae, and healing ulcerations on the distal digits of both hands and feet for about a month this winter as well as intermittent shortness of breath since she moved to the northeast from the Caribbean. What's in your differential?

The young female presented with a 1-month history of violaceous papules, petechiae, and healing ulcerations on the distal digits of both hands and feet.

Recent travel to the Caribbean is the key clue that led to the diagnosis of dengue fever, which caused maculopapular rash, fever, headaches, and body aches.

Here, 3 slide shows that were the most popular of our weekly offerings in 2013. Have a go at the quiz questions and see how well you do.

Small and nondescript, subungual splinter hemorrhages should prompt further investigation.

Thin dark lines beneath the fingernails are the only physical findings of note in a middle-aged man who presents with cough, fevers, and arthralgias.

This mobile tender nodule was discovered on the left wrist of a 60-year-old woman with a history of many non-melanoma skin cancers. What’s your best diagnostic guess?

This lesion was treated in the primary care physician’s office. What treatment approach would you opt for?

Blepharitis caused by lice; lung cancer in former smokers; infection in chronic kidney disease. . . . here: 5 questions on 5 different disorders to challenge you again this week.

After a “swig” of Kaopectate, this patient noticed tongue discoloration. Is this coincidental, or is there a clinical connection?

The topics this week range from superficial to visceral, and from head to spleen. See if you can answer all 5 questions.

Here a close-up look at fungal, eosinophilic pustular, and steroid-induced folliculitis.

Here: a close-up look at gram-positive and -negative cases of folliculitis.

Bites from various bugs can resemble one another and cause symptoms similar to those of a variety of disorders. Test your knowledge in this week's photo quiz.