Bernard A Cohen, MD

The patient’s medical history included several episodes of mild diaper dermatitis and erythematous rashes during periods of teething.

What's the diagnosis of this linear eruption on an adolescent girl's leg?

Take your best guess and try to diagnose this 9-year-old girl's linear eruption on the back of her left thigh and leg. Stay tuned for the full case presentation and correct diagnosis!

His mother reported that the nail had developed a green discoloration and had begun to detach approximately 1 week prior to the visit.

Can you diagnose this healthy, 8.2-lb girl with lesions primarily on her lower lip but also her upper lip, cheeks, and nasolabial folds?

Can you diagnose this month's dermatology case?

Can you diagnose this adolescent with an 11-day history of diffuse targetoid and bullous lesions on his extremities and trunk?

Caregivers and parents should feel empowered to protect their children with sun-safe practices that include sunscreen, sun-protective clothing, and sun-safe activities.

A young woman with no significant past medical history returns from hiking with several white-spotted ticks and experiences erythematous papules, rashes, headaches, and fatigue. What’s the diagnosis?

As children get ready to return to school, pediatric health care providers may start seeing more of this condition in their offices. Here is what you should know.

You are called to the hospital nursery to evaluate a healthy full-term newborn boy who developed painful flaccid blisters and erosions on the tops of his feet and ankles shortly after birth. His mother had a history of similar recurrent skin lesions that healed with scarring. She also had oral and gastrointestinal tract involvement. What's the diagnosis?

You are asked to evaluate a boy, aged 14 years, who presents with one week of tender, expanding, confluent, purple blisters on his swollen left thumb, extending under the thumbnail.. What is the diagnosis?

A previously healthy 2-week-old girl developed multiple, asymptomatic pustules on her scalp, forehead, eyelids, and upper cheeks. She has been growing and developing well with appropriate weight gain. What's the diagnosis?

A healthy 2-year-old boy with atopic dermatitis developed intermittent flares of eczematous patches on his legs with dramatic sparing below the sock line following meals. What is the diagnosis?

With Juvenile spring eruption (JSE), exposure to sunlight in early spring or summer results in a papulovesicular rash that usually resolves within 1 to 2 weeks.

A 16-year-old boy with developmental delay and intellectual disability developed dramatic chronic wrinkling of his scalp over a year ago. The lesions were persistent but not symptomatic. What's the diagnosis?

The parents of a 3-month-old girl seek medical advice regarding recent seizures and a facial birthmark. What’s the diagnosis?

A healthy 14-year old boy was evaluated for an intensely pruritic shin rash that developed 2 weeks prior and had been treated with oral antibiotics for 10 days.

Diaper dermatitis is common and the differential diagnosis is broad. Here are 5 cases that illustrate the various diagnoses that fall within this spectrum.

Acne, molluscum, atopic dermatitis, and other dermatological disorders can be detrimental to quality of life for children and their families.

An 18-month-old girl presents with ringed scars with hyperpigmentation on the right side of her buttocks and back. What's the diagnosis?

A presentation from the 2021 virtual American Academy of Pediatrics Conference & Exhibition urges including examination of the scalp and nails during any skin exam.

A healthy 9-day-old girl presents with erosions near her eyes, nose, and skin creases on the arm as well as a positive Nikolsky sign. What's the diagnosis?

It effects most teenagers and can lead to mental distress. Here are 5 important facts about acne vulgaris in adolescents.

An otherwise healthy 6-month-old boy has a 1-cm area of recurrent blistering with surrounding erythema on his right cheek that developed shortly after birth.

Atopic dermatitis is a chronic, inflammatory skin condition that affects 15% to 20% of children and 1% to 3% of adults in the United States. The prevalence of atopic dermatitis, which is also known as eczema, is increasing in developing and industrialized countries.

A 15-year-old male first noticed the marks on his back during a recent vertical growth spurt. On exam there are multiple horizontal violaceous linear striae on his back. He is otherwise healthy and denies any history of back injury or exposure to topical or systemic steroids. What's the diagnosis?

You are asked to evaluate a healthy 19-month-old boy with a history of recurrent blisters on his arms and legs for over a year that have now spread to his face. The blisters scab over quickly, ulcerate, and heal with post-inflammatory pigmentary changes. What's the diagnosis?

COVID-19 has been seen as primarily a disease impacting the lungs, but more of the body's systems have been shown to be impacted by the disease. Here's a look at how the disease impacts the skin.

Anxious parents present their healthy 9-year-old son for evaluation of a slowly enlarging plaque that began developing on his lower back 3 months ago. What's the diagnosis?