Dermatology
- Palmar erythema as a sign of cancer
Red palms in an elderly patient can be due to a number of systemic diseases.
- The Leser-Trélat sign
The patient presented with night sweats, dry cough, weight loss, and sudden onset of “itchy moles” on her back.
- Minocycline-induced hyperpigmentation
The patient presented with extensive bluish skin discoloration that had started 1 year earlier as a small area and then spread.
- Plexiform neurofibroma
A 19-year-old woman presented with diffuse swelling on her neck and face that had been growing gradually for 12 years.
- Eruptive xanthoma: Warning sign of systemic disease
Initial laboratory testing showed a triglyceride level of 5,742 mg/dL.
- Skin findings associated with nutritional deficiencies
Reviewing the dermatologic effects of defi ciencies of zinc and vitamins A, B2, B3, B6, and C.
- A man with HIV and papules and nodules on the knees
Erythema elevatum diutinum may be confused with Sweet syndrome, Kaposi sarcoma, or bacillary angiomatosis.
- Measles: More than the rash (May 2016)
Readers comment on recognizing the signs of measles (May 2016)
- Advanced-stage calciphylaxis: Think before you punch
Biopsy can cause or worsen ulceration at the incision site, increasing the risk of infection and sepsis.
- Geographic tongue
Although striking, the lesion is benign and self-limiting and rarely warrants further investigation.