This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
A caretaker in a nursing home presents with pruritus of her trunk and extremities. On physical examination, she has several erythematous papules in her finger webs, axillae, umbilicus, and groin areas. Her scalp is clear. Which of the following is the best treatment for this woman? 
Select and explain. 
A. Clindamycin solution, B. Oral erythromycin, C. Permethrin cream, D. Topical steroids
C: Permethrin cream
Answer: C: Permethrin cream 
Explanation: The patient has scabies, which is characterized by intense pruritus and erythematous papules, especially in the flexural and genital areas. Permethrin cream is the treatment of choice. Treatment with topical steroids will help reduce the pruritus but will not eliminate the scabies mite. Topical antibiotics can be used to treat folliculitis. However, given the distribution of the lesions, diagnosis of folliculitis would be less likely.