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Which of the following autoimmune disorders often follows a photosensitive distribution?

See figure AThis woman presents with an acute rash that has erupted on her abdomen, buttocks and thighs. She says her main complaint is that the rash is very itchy, especially in the areas of her striae distensae (stretch marks) on her abdomen. She reports that this is her first pregnancy, and that she is having twins. Physical exam reveals coalescing erythematous papules and plaques over her abdomen, thighs and buttocks. What is the most likely diagnosis?See figure A

Below are several different molecules. Which ones contain a ketone?

See image FThis 22-year-old patient presents with acute salmon-pink, mildly pruritic papules that have silvery-white scales, scattered diffusely over her body. She reports having streptococcal pharyngitis a few weeks earlier. She is not currently taking any medications. What is the most likely diagnosis? See image F

Which of the following chronic, systemic infections is known to occasionally occur from the process of tattooing?

Which of the following is an accurate description of verruca plana?

The four cell layers of the enamel organ are:

Refer to image HThese images are two separate patients with the same diagnosis. Both have a unilateral rash that is very painful. Pain started a few days before the rash erupted and their rashes are only in the unilateral areas seen. What is the most likely diagnosis?Refer to image H

Refer to image DThis female presents with new-onset hair growth on her face. She is not currently using any medications. What disorder should be ruled out as a possible cause?Refer to image D

The tooth germ consists of three embryologic structures: