Lichen Simplex Chronicus — MCQs

A 70-year-old man comes to the emergency department because of a skin rash and severe itching. He appears ill; there is a generalized skin rash that is scaly, erythematous, and thickened. His palms, soles, and scalp are also involved. Which of the following is the most likely diagnosis?

A child presented with asymptomatic lesions on the forearm and on the shaft of the penis. The lesions on the forearm are shown below. What is the most likely diagnosis?

Scabies oral treatment of choice:

The following is an important feature of psoriasis:

Lines of Blaschko are related to?

A woman with diabetes mellitus presents with an asymptomatic skin lesion present for the past one year. On examination, there is a non-scaly, annular lesion as shown in the image. There is no itching or pain. What is the most likely diagnosis?

A child presents with severe itching involving the extensor surface, especially at night . There is a positive family history of asthma in father. On examination, the child has dry, itchy skin with eczematous lesions. What is the most likely diagnosis?

A 48-year-old woman with a 10-year history of rheumatoid arthritis (anti-CCP positive) presents with a rapidly progressive, extremely painful ulcer over the anterior aspect of the shin. The lesion began as a pustule and progressed to a deep ulcer with anecrotic black eschar and violaceous undermined margins. There is no history of trauma or diabetes. What is the most likely diagnosis?

How does chronic cumulative irritant contact dermatitis differ pathophysiologically from acute irritant contact dermatitis?

In infancy, atopic dermatitis typically spares which of the following areas?