History:

 Question: Red scaly rash on the trunk. What is the diagnosis?

Answer 1:
Guttate psoriasis

Answer 2:
Drug reaction

Answer 3:
Erythema annulare centrifugum

Answer 4:
Pityriasis rosea

Answer 5:
Dermatophyte infection

 

Answer 4:
Pityriasis rosea
This was pityriasis rosea. There is variable acanthosis and some spongiosis. There is parakeratosis in mounds and some parakeratosis shows the angulated or tea pot sign. There is no red cell extravasation here . There is a fairly tight superficial perivascular lymphocytic infiltrate. Dermnet on Pityriasis rosea View this video of atypical Pityriasis rosea

View this Path Presenter Slide