Which of the following skin disorders is associated with ...

[bobbysung]

Which of the following skin disorders is associated with diabetes?
 
  A. Acanthosis nigricans
  B. Vitiligo
  C. Impetigo
  D. Folliculitis

Question 2

Your patient complains of a progressive loss of pigment in various patches on the body. Affected skin surfaces are otherwise normal (e.g. no scaling, vesicles, elevation, or other changes). The most likely cause is:
 
  A. Vitiligo
  B. Acanthosis nigricans
  C. Psoriasis
  D. Pityriasis alba

[mmpiza]

Answer to Question 1

ANS: A
Acanthosis nigricans is associated with insulin resistance. It is most prevalent in individuals who are obese and in Blacks and Hispanics. Onset is usually in youth. It is an area of darkly pigmented skin often within the skin folds.

Answer to Question 2

ANS: A
With vitiligo, the patient often describes a history of the progressive development of small, multiple areas of depigmentation that, over time, become larger and confluent. There is no overlying scale or vesicle development. Any area of skin can be involved. The hair in the affected area may also lose pigmentation. There is a higher incidence of vitiligo in patients with autoimmune disorders, particularly those affecting the endocrine system, including hypothyroidism, diabetes mellitus, and Addison's disease.

[bobbysung]

Excellent

[kjohnson]

Great answer, keep it coming