Derm Exam 100% Correct!!

An 65-year-old man is being treated at the dermatologist for a lesion on his face for the past 5 weeks that will not go away. Additionally, the patient has a history of staying out in the sun, as he lives in Florida. Upon physical exam, a 0.6 cm macule that appears flesh-colored and slightly hyperpigmented is present on his right cheek. Upon palpation, the macule feels like sandpaper and is tender to the patient. All labs are within normal limits. Dx? - ANSWERActinic keratoses A 50-year-old Caucasian man presents with an itchy lesion on his left leg. He reports that it has been recurrent for several years, always appearing at the same site. On examination, a coin-shaped, crusted lesion is noted on his left pretibial surface. Dx? - ANSWERNummular dermatitis A 22-year-old woman presents with a 3-day history of a rash on her legs. On physical examination, several extremely tender indurated nodules are noted, as well as red spots on her anterior lower extremities that are distal to her knees. She states that she cannot sleep with a blanket on her bed due to the discomfort it causes when the blanket rubs against her legs. Dx? - ANSWERErythema nodosum An 8-month-old male infant presents with rashes over the scalp and eyebrows. Physical examination shows a dry, scaly, and crusting lesion over the scalp, eyebrows, and nape area. He is comfortable, so his mother presumed that it was not itchy at all. He has been breastfed up to the present, and he started solid food at about 5 months old. There are no other signs and symptoms noted. Bowel movement and urination are normal. Developmental milestones are consistent with age. What is the most likely diagnosis? - ANSWERSeborrheic dermatitis A 33-year-old Caucasian man presents with redness, itching, and burning on the back of his hands. He gives a history of clearing 'weeds' on his farm yesterday. You ask him to describe the weeds, and he states that they had a cluster of 3 leaves. There are several tiny blisters with a linear distribution on both his hands. Dx? - ANSWERPoison ivy dermatitis A 24-year-old woman presents with a rash. She has never had a rash like it prior to presentation. You ask about symptoms, and the only thing she states is that it mildly itches. On physical examination, you note scattered multiple lesions with marked vesicles, pustules, sharply marginated plaques with central clearing, and crusting at