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Bernard A Cohen, MD
Infant’s disseminated rash is twice misdiagnosed
A frustrated mother carries her 2-month-old son into the office for evaluation of a diffuse bright red rash with dramatic hypopigmentation. Scalp, neck, axillary, and diaper areas are involved.
FDA approves etanercept for pediatric psoriasis
The US Food and Drug Administration (FDA) approval of etanercept for treatment of children with moderate to severe plaque psoriasis will revolutionize the management of psoriasis in children.
Adolescent with enlarging asymptomatic birthmark
An 11-year-old girl asks her pediatrician about an asymptomatic birthmark on her right thigh that drains clear to slightly bloody-tinged fluid occasionally when scratched. It has increased in size proportionally as she has grown.
Linear papular eruption grows on boy’s neck
A father brings his 12-year-old son to the clinic for evaluation of a skin eruption that has been on the back of the boy’s neck for a year, but which just began to extend behind his ear. The rash is asymptomatic, and the otherwise healthy patient is annoyed that he has to spend a beautiful morning in a physician’s office.
Boy’s fever and rash after insect bite
The parents of a 4-year-old boy who lives in eastern Maryland near the Pennsylvania line are worried about an expanding rash on his back, which started as a small red bump a week ago following a summer picnic. The boy has had a low-grade fever and has not been acting like himself for a few days.
Vesicular rash in an infant with eczema
The parents of a healthy 6-month-old boy with eczema bring him to the office for evaluation of a rapidly progressive rash on his arms, legs, face, and back. He had a low-grade fever and loose stools for 2 days last week.
Baby with recurrent blisters
Baby with recurrent blisters
The parents of a healthy 11-month-old girl eagerly seek a consultation for a recurrent blistering brown bump on the baby’s right cheek, present since birth. Recently, the blistering episodes seem to be decreasing, although the bump continues to become bright red a few times a week.
Infant’s growing birthmark causes blurry vision
You are asked to see a healthy 3-month-old boy with a rapidly growing lump on his left upper eyelid.
Annoying neck nodules in an adolescent boy
A healthy adolescent boy asks you to cure an itchy and painful rash on the nape of his neck that began over a year ago when he switched barbers. What’s your diagnosis?
Ultraviolet radiation exposure and melanoma
The incidence of childhood melanoma is increasing. There is evidence that cumulative exposure to ultraviolet radiation from the sun in the first 18 years of life contributes to the development of future skin cancers.

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