Dermatologic Disorders

Resource Center

Resources
Research Summaries FDA Alerts Pearls of Wisdom From the Journal
Insights
Commentary Podcasts Q&As
Interactive
Polls Quizzes
An Atlas of Lumps and Bumps
Photo Essay

From the Journal

What's Your Diagnosis?
The patient presents with hyperpigmented macules on the lips, tongue, buccal mucosa, and gingiva.
What's Your Diagnosis?
Progressive Oral Pigmentation in a Young Woman
04/29/2026
Gracyn Allan, BS; Rachel Anderson, BS; Gelan Shamloul, DO; Thomas N. Helm, MD
A 19-year-old collegiate athlete presented with progressive darkening of the lips and oral mucosa beginning in the summer of 2022. The pigmentation, which began on her lips, extended over time to her...
04/29/2026
What's Your Diagnosis?
Discrete keratotic, pustular papulonodular lesions with central necrotic crust in differing stages of healing on the lower extremities.
What's Your Diagnosis?
Can You Diagnose the Lesions on This 21-Year-Old Woman’s Lower Extremities After She Returned from the Philippines?
04/27/2026
Peyton Yee, BS; Olivia Cohen, MD, MSPH; Barrett J. Zlotoff, MD
A 21-year-old previously healthy woman presented to the emergency room with a progressive rash on her right leg and was found to be febrile and hypotensive.
04/27/2026
What's Your Diagnosis?
Red to violaceous nodules with central ulceration and stasis changes on the right lower leg
What's Your Diagnosis?

Mycobacterium Chelonae Infection Diagnosed by PCR in a Patient with Chronic Leg Nodules
04/11/2026
Elen Deng, BS; Mary Helene; Bansri M. Patel, MD; Jeffrey Miller, MD; Thomas N. Helm, MD
A 68-year-old woman presented to the dermatology clinic with a 3-year history of purpuric nodules on the right lower extremity.
04/11/2026
Photoclinic
Figure 1A-C. Lesion presentation of suspected atrophoderma of Pasini and Pierini is shown.
Photoclinic
Atrophoderma of Pasini and Pierini: A Therapeutic Challenge
03/23/2026
Michelle L. Gallagher, DO
A 14-year-old girl presented to the dermatology clinic with hyperpigmented, depressed lesions on her bilateral upper extremities and trunk that had been present for 4 years, with more recent darkening. ...
03/23/2026
What's Your Diagnosis?
Two subcutaneous nodules were noted on the lateral right deltoid
What's Your Diagnosis?
Firm Erythematous Nodules in a Term Newborn
03/23/2026
Margaret Taing, BS; Andy Xiao, BS; Thiagarajan Nandhagopal, MD
A late-term newborn, born at 41 weeks and 1 day gestation to a 31-year-old G5P4 mother, developed erythematous nodules on the right shoulder on day 2 of life during routine inpatient evaluation.
03/23/2026
Photoclinic
This image presents flesh to white-colored, firm verrucous papules of the right arm.
Photoclinic
Generalized Eruptive Keratoacanthomas Arising in the Setting of Anti-Cancer Therapy: An Illustrative Case with Spontaneous Resolution
03/16/2026
Kiera Murphy, BS; Rachel K. Anderson, BS; Alyssa Egland, CPNP; Thomas N. Helm, MD
A 61-year-old man undergoing treatment for metastatic urothelial carcinoma of the bladder with pembrolizumab and enfortumab vedotin-ejfv presented with new-onset painful nodules on the bilateral arms, legs,...
03/16/2026
Photoclinic
Fitzpatrick Skin Type III female with exquisitely tender, brownish-red, poorly demarcated, subcutaneous nodules on the bilateral anterior shins.
Photoclinic
Erythema Nodosum in an Adolescent Following Acute Streptococcal Pharyngitis
03/08/2026
Romina Garakani, BS; Zane Sejdiu, BS; Hannah Kahn, BS; Aspen Trautz, MD; Blake E. Brooks, MD, MS; Mary M. Braden, MD; Farhaan Hafeez, MD; Andrew C. Krakowski, MD
A 15-year-old adolescent girl with Fitzpatrick Skin Type III presented to dermatology with a 3-week history of tender, brownish-red, poorly demarcated, subcutaneous nodules on the bilateral anterior shins. ...
03/08/2026
Photo Quiz
Pink, erythematous and edematous plaques with yellow to light brown exudate and crusts involving the forehead, bilateral cheeks and left periorbital skin.
Photo Quiz
Facial Swelling and Linear Vesicles in a Pediatric Patient
03/05/2026
Julia A. Vaichekauskas, 2d Lt, USAF, MSC; Russell Newkirk, MD; A. Yasmine Kirkorian, MD
A 9-year-old boy presented to the emergency department with a facial eruption that emerged following a weekend camping trip. Four days after the trip, the patient developed a progressively worsening rash...
03/05/2026
What's the Take Home?
man talking to doctor
What's the Take Home?
A 76-Year-Old Man with a Lesion of the Right Ear
03/01/2026
Ronald N. Rubin, MD
A 76-year-old man reported right ear pain of more than 2 weeks’ duration that began while he was at the beach during the summer.
03/01/2026
Photoclinic
This image shows the patient’s back with 1.8 cm hemorrhagic plaque with central vesicles
Photoclinic
Disseminated Herpes Zoster: A “Can’t Miss” Diagnosis
02/22/2026
Aspen Trautz, MD; Sarah Ahmed, MD; Claire Rose Kissinger, BS; Carla Shiller, MD; Mary M. Braden, MD
A 65-year-old woman presented to the dermatology clinic with ecchymotic lesions that had started 10 days prior in various areas, including the right lower back, right heel, central abdomen, and left...
02/22/2026