A 28-year-old male dishwasher presents with pain and swellin…

A 28-year-old male dishwasher presents with pain and swelling around his right middle fingernail that has worsened since onset one week ago. He has had no prior episodes and is concerned about what he might have been exposed to at work. On examination, the mediolateral nail fold is erythematous, swollen, and tender. He has no other symptoms (he specifically denies fever), and there are no other findings on examination. Which of the following statements regarding this condition is true?

A 16-year-old male high school student presents with a prima…

A 16-year-old male high school student presents with a primary concern of acne. He relates a history of two years of moderate mild acne and closed comedones (whiteheads) which have recently worsened such that his classmates are now bullying him about a large pustule that has developed at the tip of his nose. He has increasing outbreaks of cyst-like acne as well as a generally poor complexion with pitting and scarring from prior outbreaks. Which of the following best describes this condition in the adolescent population?

A 32-year-old adult presents to the office with a rash that…

A 32-year-old adult presents to the office with a rash that developed earlier today and is consistent with the rash shown in the provided image. The patient has no fever but reports mild discomfort and notes that the rash appeared over the course of one hour. Which of the following is the most likely cause of this rash?