Verrucous Tungiasis
This case report describes a man in his 30s presenting with foul-smelling verrucous plaques and whitish papules with central black dots observed on the feet, legs, knees, buttocks, elbows, and hands, with nail dystrophy.
JAMA Dermatology
An Enlarging Painless Nodule on a Man’s Index Finger
A man in his 50s with hepatitis C presented with an enlarging painless nodule on the right index finger. What is your diagnosis?
Mendelian Randomization for Dermatology Research
This JAMA Network Insight describes the use of mendelian randomization, including key assumptions that must be met, in dermatology research.
Nevus Anemicus
This case report describes a young, elementary school aged boy with nevus anemicus.
Febrile Ulceronecrotic Mucha-Habermann Disease
This case report describes an otherwise healthy 30-year-old man who presented with a sudden onset, rapidly progressive, and painful skin eruption accompanied by fever lasting for 1 week.
Alopecia Areata–Specific Patient-Reported Outcome Measures
Importance Alopecia areata (AA) has a high prevalence worldwide and causes considerable morbidity in patients. Patient-reported outcomes (PROs) have become an important component of clinical outcome assessment. The quality of existing AA-specific PRO measures (PROMs) has not been evaluated to date….
Circular Necrotic Yellow-Red Plaque on the Chest
A man in his 40s presents with a progressively enlarging yellow-red plaque on the chest with multiple central yellow papules, open comedones, and telangiectasia. What is your diagnosis?
Subungual Amelanotic Melanoma
This case report describes a light pink plaque underneath an atrophied and broken nail plate that was surrounded by depigmentation.
A Firm Pigmented Plaque on the Forearm of a Child
A 12-year-old boy was referred to the dermatology clinic with a nonprogressive hyperpigmented and indurated plaque on his right forearm for 5 years. What is your diagnosis?
Folliculitis Decalvans
This case report describes a woman in her 40s who presented with a 4-year history of progressive hair loss with associated pruritus and pain and was diagnosed with folliculitis decalvans.
