Diagnosis: Pityriasis rosea
Description: Red scaly rash on the trunk
Clinical Features: Red,scaly
Pathology/Site Features: Chest
Sex: M
Age: 30
Submitted By: Ian McColl
Differential DiagnosisHistory:
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