Dermatologic Disorders

A popliteal cyst, also known as a Baker cyst or parameniscal cyst, forms when the synovial fluid from the knee joint fills and distends a preexisting gastrocnemius-semimembranosus bursa in the popliteal...

A 17-month-old male infant with a history of atopic dermatitis presented for a 1-day history of a moderate to severe rash over his arms, legs, and chest. The rash was bleeding, flaking, itchy, and painful....

A ganglion cyst is a benign cystic swelling that typically arises from the synovium of either a tendon sheath or a joint capsule.

A 56-year-old woman presented to clinic for the evaluation of tender nodules that had gradually developed on her back and over her shoulders over several years’ time.

Dermatosis papulosa nigra is a common, benign epidermal growth characterized by the presence of multiple, asymptomatic, hyperpigmented, round, dome-shaped or flat, papules or macules localized predominately...

A 57-year-old woman with a past medical history of essential thrombocytosis, chronic obstructive pulmonary disease, hypertension, and treated chronic hepatitis C presented to the emergency department with...

A 3-year-old boy presented to our clinic for penile lesions that first appeared 3 to 4 weeks earlier.

A 16-year-old girl presented to our clinic with a 5-month history of hyperpigmented brown plaques on her back.

A 25-year-old woman with no past medical history presented to the dermatology clinic with abrupt onset of an asymptomatic, reddish, inverted-U-shaped papulosquamous skin eruption that started 3 weeks...

A 63-year-old man with hypertension was prescribed amlodipine for blood pressure control. Three days after initiating treatment, he developed an extremely pruritic rash on his back.