Diagnosis Strategies

Maculopapular cutaneous mastocytosis (also known as urticaria pigmentosa) is the most common form of cutaneous mastocytosis and accounts for 70% to 90% of pediatric cases. Its incidence has been estimated...

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.

A 47-year-old man presented to the emergency room (ER) after a 2-day acute illness characterized by fever, prostration, and cough.

A 12-year-old boy presented to the emergency department with worsening right eye pain, redness, photophobia, eyelid swelling, and blurred vision. His symptoms began 3 days after being struck in the right...

A 76-year-old man presents to the emergency department due to the acute onset of left knee pain.

An 84-year-old man presented to primary care with a progressively enlarging, nontender right axillary mass.

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.

A 66-year-old man is being evaluated for elective, outpatient surgery on his left elbow. Approximately 30 years prior, the patient sustained a traumatic fracture of his left elbow that required surgical...

A previously healthy 47-year-old woman presents to an urgent care facility with chief complaint of acute abdominal pain.

A 54-year-old woman with a history of mitral valve replacement and warfarin therapy presented to the emergency department with worsening right lower extremity pain.