Author | Bernard Cohen, MD


Persistent birthmark grows on a toddler’s back

June 04, 2020

The parents of a healthy 20-month-old boy ask for advice about a birthmark on his lower back. The lesion is asymptomatic and has grown proportionately with their son. What's the diagnosis?

Rapidly growing nodule on an infant’s finger

July 10, 2019

An otherwise healthy 5-month-old girl presents with an asymptomatic, rapidly growing, firm, smooth nodule on the side of her left fifth finger since she was 2 months of age.

Fuzzy brown spots on a healthy 3-year-old

June 19, 2019

A healthy 3-year-old girl presents for evaluation of light brown spots on her trunk and extremities that have appeared over the last 2 years. The spots are not symptomatic but the girl’s parents are worried that she could have neurofibromatosis.

Girl’s hands shrivel when exposed to water

December 01, 2018

A 16-year-old girl presents to the clinic for acne follow-up and mentions that her palms wrinkle significantly after only a few minutes of immersion in water. She is otherwise well and has no significant past medical history.