Ted Rosen, MD

July 16, 2013

After a dog bite, trauma in the form of a subungual hematoma and shallow lacerations prompted a 10-day course of amoxicillin-clavulanate. This antibiotic is also useful for cat and human bites that appear to be at high risk of becoming infected.

July 12, 2013

A biopsy revealed non-caseating granulomata, and culture revealed Mycobacterium marinum. This patient had a fish tank at home, and used his right hand to perform maintenance.

July 03, 2013

This pigmented macule clearly stands out against a bland background of fair-complected skin. This is known as the “ugly duckling” sign. Such lesions should always be viewed with suspicion and a biopsy is generally indicated.

July 01, 2013

This tumor is a low-grade soft tissue sarcoma. Metastases are uncommon, but local recurrence is very frequent. Mohs surgery is the optimal treatment modality.

June 28, 2013

The shallow ulceration surrounded by a ring of erythema is characteristic for aphthous ulcers (canker sores). This patient’s otherwise negative history rules out Behcet’s disease.

June 28, 2013

The persistent pigmentation on this woman’s hands corresponds to areas of intralesional injections of bleomycin for recalcitrant warts.

June 26, 2013

Because of this patient’s recent travel history to Africa, the penile lesions were cultured, and Haemophilus ducreyi was isolated, confirming the clinical suspicion of chancroid.

June 24, 2013

Adult-onset psoriasis is uncommon without a precipitating factor. In this patient’s case, an oral beta-blocker precipitated the psoriasis.

June 21, 2013

Contact dermatitis to paste-on fingernail decorations developed when the patient held her lower eyelid down with her index finger to insert her contact lenses.

June 21, 2013

This non-specific pruritic eruption is a common manifestation associated with HIV infection, especially in the pediatric population.