NR-576 Differential Diagnosis in Adult -Gerontology Primary Care Midterm Exam (Newly Updated) Question: Eczema herpeticum Answer: primary HSV infection in atopic dermatitis. Umbilicated vesicles over eczema areas, fever, LAD. Can be life threatening in infants. Tx - acyclovir. Question: Erythema multiforme Answer: skin disorder resulting from a generalized allergic reaction to an illness, infection, or medication. iris -shaped lesions with polymorphous disseminated macular, papular, nodular, vesicular, bullous, and target (bull's eye-shaped) lesions of the skin and mucous membrane s Question: herpes zoster Answer: viral disease affecting the peripheral nerves, characterized by painful blisters that spread over the skin following the affected nerves, usually unilateral; also known as shingles Question: actinic keratosis Answer: precancerous skin condition of horny tissue formation that results from excessive exposure to sunlight Question: basal cell carcinoma Answer: malignant tumor of the basal cell layer of the epidermis. Elevated papules that have a pearly appearance, with so me crusting. Slow progression without pain , Occurs in sun -exposed areas , Often on face , May ooze, crust, or bleed . A spot or a bump that is getting larger or a sore that is not healing. Appears as a thick, rough patch that may bleed if scratched or scr aped. Some patients think they are warts with a raised border and crusted surface Question: squamous cell carcinoma Answer: Type of skin cancer more serious than basal cell carcinoma; firm papule with a scaly (keratotic) rough surface with irregular bord ers. These lesions may even present as cutaneous horns, with columnar hyperkeratosis atop an erythematous base Question: Melanoma Answer: Asymmetrical , Border - irregular , Color - dark or uneven , Diameter - >6mm, Evolution - change in shape, size, color , "Ugly duckling" - does not resemble other moles or skin growths on the body , Refer to dermatology Question: acne vulgaris Answer: open and closed comedones, found on face, sometimes body. Painful and tender ness from multiple deep pustules, nodules, and cysts
