Answer and Explanation 3

3.  The correct answer is D permetherin.  These papular excoriated lesions in the web space in a linear fashion are characteristic of scabies.  This patient has a rash involving almost their entire body.  You notice the head and neck are not mentioned and often spared in scabies.  Prednisone would be effective in contact dermatitis.  These lesions are more characteristic of scabies.  Bactrim and keflex would be helpful in folliculitis or bed bugs that were infected.  Triamcinalone would be helpful for more localized treatment of contact dermatitis or steroid responsive dermatoses.  The parasite that cause scabies is sarcoptes scabiei.