JAMA Dermatology

Madelung Disease

This case report describes nontender, soft, and mobile tissue proliferations involving the anterior, lateral, and posterior neck spaces and diffuse, nonencapsulated soft tissue masses that were widely distributed across superficial and deep fascial spaces.

Pili Annulati

This case report describes a teenage girl with glistening hair and was found to have alternating dark and light bands within the hair shafts on trichoscopic evaluation.

Tuberculous Mastitis

This case report describes induration of the right breast with multiple painful ulcers, draining nodules, and fistulae.

Solitary Acute Necrotic Scrotal Ulcer in a Young Patient

A healthy young male patient was referred to the department of dermatology for evaluation of a solitary painful scrotal ulceration that developed rapidly 48 hours before consultation. What is your diagnosis?