Dermatology

There are some nevi with odd-appearing morphologies but well-recognized benign courses. Fried egg nevus is one.

MRSA: In most instances of severe skin and adjoining structure infection, assume MRSA and choose initial antibiotics accordingly.

Primary cutaneous squamous cell carcinoma: the appearance of this lesion alone suggests the proper diagnosis.

A 56-year-old man is worried about a number of slowly growing facial bumps. There are several under each eye and one on each side of the nose. He is convinced that these are skin cancers.

“Nonspecific” intertrigo: the morphology (borders that aren’t sharp, absence of satellite lesions) is a key diagnostic clue.

Heterochromia iridis may be inherited or acquired. Acquired heterochromia may be caused by chronic uveitis, or (rarely) an underlying neuroblastoma. Here: a case in point.

The prognosis for individuals with this disorder depends on the severity of symptoms.

Are these lesions skin cancers, as this patient believes?

The diagnosis in this case turned out to be a surprise: what are your suspicions?

Although this patient has been treated by several health care providers for this expanding lesion on his scalp, nothing has worked. The pathology is clearly outside the “normal” realm. What’s going on?

Here: Ted Rosen, MD, presents 5 tips about 5 skin disorders that you might not know.

A 38-year-old openly homosexual man presented with cough and multiple asymptomatic skin lesions on his face.

A 42-year-old homemaker noticed a discoloration on her palm. There were no symptoms, but she was greatly perturbed by her inability to wash this “dirt” off her skin . . .

Here: Dr Rosen presents 5 tips about 5 skin disorders that you might not know.

Here: Dr Rosen presents 5 tips about 5 skin disorders that you might not know.

A 24-year-old woman presented with a chief complaint: “Check a funny mole.” Her boyfriend pointed out that a single mole on her back looked “different.”

This 66-year-old black woman presented with a 2-year history of a painless skin eruption. She stated that her skin had “changed overnight” while she was caring for her mother who had been hospitalized.

Here: Ted Rosen, MD, presents 5 tips about 5 skin disorders that you might not know.

Here: Ted Rosen, MD, presents 5 tips about 5 skin disorders that you might not know.

A 27 year-old woman was petting her cat, when the animal suddenly bit her on the arm. She rinsed copiously with isopropyl alcohol and applied an over-the-counter antibiotic ointment. But, 12 hours later, a large, red, swollen and exquisitely tender plaque had developed around the bite site.

Here: Ted Rosen, MD, presents 5 tips about 5 skin disorders that you might not know.

Following his routine rosacea follow-up visit, this 58-year-old man incidentally asked about a lesion on his left third digit. He pointed out a dime-sized, red, scaly patch on the dorsal aspect of the distal portion of the knuckle that extended toward the end of the finger.

An 8-year-old child has intensely pruritic lesions on the thumbs, adjacent dorsum of the hand, soles of the feet, and navel. Vital signs are normal. The patient is otherwise healthy and has no recent history of exposure to poison ivy.

Acanthosis nigricans is a nonspecific increase of the thickness of the prickle cell layer of the skin and most commonly seen in obese persons.

Match each picture with the phrase below that best describes it. The pathogenic organisms in these picturesmight be microscopic or macroscopic, and they can be recovered from skin lesions or clothing by the patientand/or clinician. Answers and discussion appear on the following page.

The mother of a 12-year-old boy is concerned about this dark mole on his neck. The asymptomatic lesion has been present for about 3 months.