Persistent Hyperkeratotic Plaques on a Man’s Genitogluteal Area
A man in his 40s presented with a 10-year history of pruritic lesions on the scrotum and buttock. What is your diagnosis?
JAMA Dermatology
Mal de Meleda
This case report describes diffuse waxy palmoplantar hyperkeratosis in a symmetrically well-demarcated “gloves and socks” distribution with nail dystrophy.
Favre-Racouchot Syndrome
This case report describes multiple solitary open black comedones located bilaterally on the malar cheeks and temples as well as yellowish, smooth-surfaced papulonodular lesions in close association with the comedones.
Annular Erythematous Plaques With Overlying Blisters in a Cluster of Jewels Pattern
A woman in her 80s presented with erythematous, nondesquamative, annular plaques in a cluster of jewels pattern on her wrists and legs. What is your diagnosis?
Erythrasma
This case report describes well-demarcated brown plaques with overlying fine scale in the bilateral axillae, inframammary folds, and inguinal folds and widespread coral-red fluorescence.
Segmental Skin Induration in a Boy
An 11-year-old boy presented with progressive unilateral skin hardening on his right thigh and buttock for 7 years. What is your diagnosis?
Causes and Clinical Presentation of Drug-Induced Dermatomyositis – A Systematic Review
Importance While several medications are known to induce dermatomyositis (DM), most existing studies are case reports or small case series from a single institution. There is also limited information on DM induced by immune checkpoint inhibitors, which are increasingly used in…
Multiple Erythematous-Violaceous Patches and Plaques on the Left Upper Arm and Left Side of the Chest
A woman in her late 20s had multiple, slowly growing, infiltrated erythematous-violaceous patches and plaques with occasional slight pain extending from her left upper arm to the left side of her chest. What is your diagnosis?
Tzanck Smear of Ulcerated Plaques
A man in his 30s with AIDS presented with acute onset painful scattered umbilicated papulopustules and ovoid ulcerated plaques with elevated, pink borders on the face, trunk, and extremities. What is your diagnosis.
A Pinpoint Orifice on the Glans Penis of a Young Man
A man in his 30s presents with a 14-year history of purulent penile discharge that has not responded to antibiotics or corticosteroids. A pinpoint orifice is found on the glans penis. What is your diagnosis?
