Dermatology

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A 37-year-old man presented with a reddish nodule in the umbilical area that had been present since early infancy. The lesion had been cauterized with silver nitrate several times in the past but had not resolved. No drainage or secondary infection was noted, and the patient was otherwise in good health.

In the web space of his left hand, a 50-year-old barber had a painful cystlike lesion. The lesion had recurred intermittently, despite oral antibiotic treatment and warm compresses. The patient's father, also a barber, had a similar, more severe condition, which eventually required surgical intervention.

For 1 month, a 66-year-old man had had an asymptomatic lesion on the dorsum of his left hand. The flesh-colored, dome-shaped, maroon-crusted lesion measured 0.7 cm in diameter and was located over the fourth knuckle. The patient had chronic obstructive pulmonary disease but was otherwise in good health. He was seronegative for HIV.

During a routine physical examination, a white forelock was noted on a 54-year-old man. The patient stated that the discolored patch of hair had been present since adolescence. Other than mild hearing loss, he had no significant personal or family medical history.

A previously healthy 52-year-old man had been using an antidandruff shampoo and a topical corticosteroid for a chronic scalp eruption that had been diagnosed as seborrheic dermatitis. Because the condition had not responded to this regimen, a scalp biopsy was performed; the findings were consistent with seborrheic dermatitis.

A patchy, macular, erythematous area developed on the dorsum of a 63-year-old woman's left foot 4 months ago. Because the lesion was asymptomatic and she was otherwise healthy, no workup was instituted at that time. The affected area subsequently became ulcerated, tender, and painful. The patient now had a 1.2-cm ulcer covered by a dried, hemorrhagic crust and surrounded by a livedo reticularis–like pattern. The entire area was extremely tender.

A 43-year-old man sought treatment of a “fungal nail infection” that had been present for several years. The condition had not responded to standard dosages of itraconazole, terbinafine, and fluconazole prescribed by another physician.

A 6-cm midline tail-like soft tissue appendage was noted on the back of this newborn infant at the level of L5. An epithelialized mid-sacrum dimple was also present inferior to the appendage. The infant otherwise appeared to be normally developed.

An 82-year-old man with Alzheimer's disease and atrial fibrillation was referred for evaluation of a lesion present for an undetermined period. It was initially noted 1 week earlier, at his first office visit with a geriatrician.

A 16-year-old girl was bothered by ankle pain and “red spots” on her lower legs. These symptoms cleared in a few days without treatment. Six weeks later, after returning from an all-day outing at a fair, she noticed that the spots reappeared and hemorrhagic lesions developed on the right ankle and left heel. After removing her shoes, the teen-ager felt severe pain in both ankles, particularly the right.

A 32-year-old woman became concerned about the numerous bumps on her upper face, which had been increasing in number for many years. Examination revealed clusters of 2- to 3-mm lesions-mostly monomorphic, flesh-colored papules lateral to the eyebrows and on the central forehead, inferior-medial eyelids, and upper cheeks. Some of the papules had a slight pink or yellow-brown appearance, and poorly demarcated brown patches (melasma) were noted on the cheeks.

This is a common infectious problem, especially among school-age children. In many cases, there are well-defined areas of hair loss that can mimic alopecia areata.

A 69-year-old man with a history of basal cell carcinoma of the face and back presented for a 6-month skin cancer evaluation. Physical examination revealed an asymmetric, irregularly pigmented, thin brown plaque of the anterior chest. A 3-mm punch biopsy specimen was obtained from a deeply pigmented area at the inferior border of the lesion to rule out melanoma.