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A 75-year-old male presents with large, tense bullae scattered diffusely over his trunk in a bilateral and symmetric pattern. He says it started a couple of days ago as urticaria that were severely pruritic. His only medication is furosemide. You decide to do a biopsy for confirmation of your suspected diagnosis and start the patient on high-dose oral steroids. What is the most likely diagnosis and its etiology?

Which of the following terms describes the change in identical embryonic cells to become distinct, both structurally and functionally?

Refer to image EThis patient reports recent trauma to his finger followed by erythema, pain, swelling and pustular drainage from an abscess. What is the best treatment at this time?Refer to image E

Refer to image OThis viral infection is chiefly transmitted person to person by contact with infected saliva. The patient complains of mild burning and tingling at the site of the lesions. She says she has outbreaks on or around her lips about once a year. What treatment do you recommend?Refer to image O

Tongue development begins as a triangular swelling, the tuberculum impar.

Which of the following developmental disturbances occurs during the bud stage of tooth development?

The PDL is derived from the:

The earliest signs of development of the human face occurs during the third week in utero with the formation  of the:

Nasmyth’s membrane in the newly erupted teeth of children is the remains of:

The point where the foregut and stomodeum share a common wall is the: