Papulosquamous Diseases (PEARLS) SMARTYPANCE.COM
Terms in this set (18)
Characterized by the
five p's: pruritic, planar (flat-topped), polyangular, purple papules
Single lesion (herald patch), but now has spread to involve the entire back and chest. You note on your examination the presence of multiple secondary lesions that appear to follow cleavage lines (Christmas tree pattern)
Single or multiple demarcated, round, erythematous plaques that often become hyperpigmented. This usually occur 30 mins to 16 hours following ingestion of certain drugs (Antimicrobials, analgesics, cardiovascular drugs, heavy metals, antiparasitic agents, barbiturates amongst others). It recurs at the same site when the drug is repeated
Fixed drug eruption
Presents as silvery scales on well-demarcated erythematous plaques occurring usually on the elbow, knee, and scalp. Nail changes (nail pitting and onycholysis) also do occur.
What is the most likely diagnosis of a patient with a "Christmas tree" pattern of oval patches on his back?
What do the 6 "P's" of Purple, pruritic, polygonal, peripheral, papules and planar describe?
Auspitz sign and Koebner's phenomenon?
A yellowish-brown discoloration under the nail aka "oil spots"?
What is Koebner's phenomenon?
Linear lesions caused by allergic contact dermatitis or psoriasis with scratching/injury
A 34 year old male notes that he has a bilateral rash on his elbows. Examination reveals silver scales over erythematous papules/plaques. What do you suspect?
What is the treatment for pityriasis rosea?
Observation - Phototherapy and antipruritic drugs only for those cases with itching
A 6 year old has a generalized scaly rash with reddish-pink plaques concentrated on the trunk in a Christmas tree pattern. What condition do you suspect?
A patient with Lichen planus has fine white lines seen on inspection of the skin. What are these lines called?
A patient presents with purple, shiny, pruritic papules across the top of her back and milky white papules in her mouth. What condition do you suspect?
A patient on doxycycline develops a severe sunburn to his face and exposed arms after being outside for only one hour. What do you suspect?
Photosensitivity drug eruption
An elderly patient presents to the office with a rash after taking a sulfa drug for a UTI. You suspect a drug eruption. How would you expect the lesions to present?
Sharply demarcated erythematous oval patches
A patient presents with drop like, discrete scattered salmon pink scaling papules. What do you suspect?
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