Ted Rosen, MD

September 27, 2012

The lesion’s location, along with visible telangiectasia on the lesion’s surface, suggest a basal cell carcinoma.

September 26, 2012

Note that some lesions occur within the outer ear, quite typical for the diagnosis of discoid lupus.

September 25, 2012

Up to 80% of those with necrobiosis lipoidica have diabetes mellitus; however, this disorder develops in fewer than 1% of people who have diabetes.

September 19, 2012

This solitary, fairly well-defined whitish plaque, surrounded by a broad band of violaceous erythema is a classic presentation of the “lilac ring” phase of early morphea. Potent corticosteroids led to prompt resolution.

September 19, 2012

The differential diagnosis includes figurate erythema, granuloma annulare, sarcoidosis, and Hansen’s disease. Additional history disclosed that the plaques expanded, migrated and disappeared over a matter of days, eliminating all but the correct diagnosis: figurate erythema, a reactional (hypersensitivity) state.

September 11, 2012

The location (pretibial surface) of this ulcer, its visibly rolled undermined border, and severe pain are all typical of pyoderma gangrenosum, which is typically associated with inflammatory bowel disease, rheumatoid arthritis, and hematologic malignancies.

September 07, 2012

This is the most common form of amyloid deposition in the skin. It is not associated with the systemic disease, but is solely a cutaneous malady.

August 31, 2012

These whitish colored lesions were the result of lichen planus. Hepatitis C virus infection should be sought, since this viral infection is often associated with recent-onset lichen planus in younger persons.

August 31, 2012

In older persons, tense blisters such as these are most likely bullous pemphigus, an autoimmune blistering disease. Biopsy as well as direct and indirect immunofluorescent tests may be needed to exclude other blistering diseases, such as pemphigus and epidermolysis bullosa.

August 28, 2012

This is classic vitiligo, an autoimmune disease in which anti-melanocyte antibodies develop. Phototherapy or topical calcineurin inhibitors may be beneficial.