The tooth germ consists of three embryologic structures:

What is the most likely etiology of pityriasis rosea?

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

A patient presents with a painless, ulcerated nodule that is inflamed along the lymphatics in a single linear pattern coming from the nodule. She is an avid gardener and also works as a florist. Which of the following is accurate treatment for the most likely diagnosis?

Refer to image PA mother brings in her 1-year-old son for you to examine. She is concerned about 2 “birth marks” on his hip and leg. Physical exam reveals two sharply demarcated, hyperpigmented, pale-brown macules, each measuring from 1-2 cm. There are no other lesions or macules of any kind and you are able to provide reassurance. HOWEVER, IF ten macules were found, as well as axillary freckling, you would need to refer the child for evaluation of what genetic disorder?Refer to image P

Facial development is completed during the ________ week of prenatal development.

A 9-year-old child presents with an extremely pruritic rash that is mainly on the trunk and seems to be spreading to the face and extremities. The rash is made up of many individual lesions that are in different stages – some appear as dome-topped vesicles on a red base, some as umbilicated vesicles and some as crusted papules. The child has missed two days of school due to fever, malaise, headache and abdominal pain. A Tzank smear of vesicle fluid shows giant multinucleated cells. What is the most likely diagnosis?

A patient presents with Herpes Zoster. Vesicles are noted on the anterior tip of her nose, (Hutchinson’s sign). Which nerve is involved?

The number of roots a tooth will develop is determined by:

Refer to figure NThis patient presents for evaluation of a “rash” in the groin area. You note a sharply demarcated, reddish-brown, slightly scaly patch. Wood’s lamp examination reveals a coral-red fluorescence. Which of the following is the most likely diagnosis?Refer to figure N